Hp 9s User Manual

hp 9s

Scientific Calculator

General Operations

Power Supply

On or Off

To turn the calculator on, press [ON/C].

To turn the calculator off, press [2ndF] [OFF].

Auto power-off function

The calculator automatically turns off if it has not been used for approximately 9 minutes. Power can be restored by pressing the [ON/C] key again. Memory contents and the current mode setting (STAT, DEG, CPLX, Base-n,etc) are retained when you turn off the power and when the calculator automatically turns off.

Battery replacement

The calculator is powered by two alkaline button batteries (GP76A or LR44). If the display becomes dim and difficult to read, the batteries should be replaced as soon as possible.

To replace the batteries:

1. Slide the battery cover off and remove the old batteries.

2. Insert new batteries, with positive polarity facing outward.

3. Replace the battery cover and press [ON/C] to turn on the power.

The keyboard

Most of the keys can perform two functions.

2nd function

――――――

1st function

―――

1st functions

These are functions that are executed when you press a key without first pressing [ 2ndF ]. The function performed is indicated by the label on the key.

2nd functions

These are functions that are executed when you press a key after first pressing [ 2ndF ]. The function performed is indicated by the label above the key.

When you press [ 2ndF ], the 2ndF indicator appears in the display to indicate that you will be selecting the second function of the next key you press. If you press [ 2ndF ] by mistake, simply press [ 2ndF ] again to remove the 2ndF indicator.

Note: [ A ], [ B ], [ C ], [ D ], [ E ], [ F ] are 1st functions in HEX mode.

Display Symbols

The following symbols, shown on the display, indicate the status of the calculator.

DEG or RAD or GRAD: degrees, radians or grads angular unit M A value is in memory CPLX Complex number mode E Overflow or error STAT Statistical mode – Minus 2ndF [2ndF] key pressed ( ) Parentheses calculation CP Precision capability BIN Binary mode CPK Process capability OCT Octal mode σ D eviation HEX Hexadecimal mode USL Setting upper limit ED Edit mode LSL Setting lower limit HYP Hyperbolic mode

Display Formats

The calculator can display numbers in four formats: floating point, fixed point, scientific, and engineering.

Floating point format

The floating point format displays numbers in decimal form, using up to 10 digits. Any trailing zeros are truncated.

If the result of a calculation is too large to be represented by 10 digits, the display automatically switches to scientific format. If the result of a later calculation is small enough to be displayed in less than 10 digits, the calculator returns to floating point format.

To set the display to floating point display format:

1. Press [ 2ndF ] [ FIX ] [•]

Fixed point format

The fixed point, scientific, and engineering formats use a fixed number of decimal places to display numbers. If more than the specified number of decimal places is keyed, the entry will be rounded to the correct number of decimal places.

Ex. 1: Fix the display at 2 decimal places, then key in 3.256

1. Press [ 2ndF ] [ FIX ] 2

2. Key in 3.256 [

If fewer than the set number of decimal places is keyed, the entry will be padded with trailing zeros.

ENTER

]

Ex. 2: Fix the display at 4 decimal places, then key in 4.23

1. Press [ 2ndF ] [ FIX ] 4

2. Key in 4.23 [

ENTER

]

Scientific format

In scientific format, the number 891500 is shown as 8.915 × 10 where 8.915 is the mantissa and 5 is the exponent of 10.

Ex. 3: To display 7132 × 125 in scientific format:

1. Key in 7132 [ × ] 125 [

ENTER

]

2. Press [ F←→E ]

You can convert an entry to scientific notati on by pressing [EXP] afte r entering the mantissa.

Ex. 4: Key the number 4.82296 × 10 5

1. Key in 4.82296 [ EXP ] 5

Engineering format

Engineering format is similar to scientific format, except that the mantissa can have up to three digits to the left of the decimal and the exponent is always a multiple of three. This is useful if you have to convert units that are based on multiples of 10 3.

Ex. 5: Convert 15V to 15000mV (V = Volts)

1. Key in 15

2. Press [ ENG ] twice.

Ex. 6: Convert 15V to 0.015KV (V = Volts)

1. Key in 15

2. Press [ 2ndF ] [ ← ] [ 2ndF ] [ ← ]

Order of Operations

Each calculation is performed in the following order of precedence:

1. Operations in parentheses.

2. Functions that require pressing the function key before entering a value, for example, [ DATA ] in statistics mode, and [ EXP ].

3. Functions that require values to be entered before pressing the function key, for example, cos, sin, tan, cos x2, x–1, √, π, conversion functions.

√

, x!, %, RND, ENG, , , and the unit

4. Fractions.

5. +/–

√

6. x y,

7. nPr, nCr

8. ×, ÷

9. +, –

Corrections

If you have made a mistake when entering a number and you have not yet pressed an arithmetic operator key, just press [ CE ] to clear the last entry. You can then input the desired number again. Alternatively,you can delete digits one at a time by pressing the backspace key: [ 00→0 ].

–1

sin sin

DEG

0.00

DEG

3.26

DEG

0.0000

DEG

4.2300

DEG

8.915 05

DEG

15.

DEG

15000.

DEG

15.

DEG

–1

, sin–1, tan–1, log, ln,

891500.

4.82296

0.015

– 03

Ex. 7: Change 12385 to 789

1. Key in 12385

2. Press [ CE ] 789

Ex. 8: Change 12385 to 123

1. Key in 12385

DEG

2. Press [ 00→0 ] twice.

In a series of calculations, you can correct errors in intermediate results by pressing [ON/C]. This clears the calculation without clearing memory.

If you press the wrong arithmetic operation key, just press [ CE ] and then the correct arithmetic key.

Exchange key

Pressing [ 2ndF ] [ X←→Y ] changes the currently displayed value to the previously displayed value.

123 [ + ] 456 [

123 + 456 = ?

[ 2ndF ] [ X←→Y ]

ENTER

]

[ 2ndF ] [ X←→Y ]

Accuracy and Capacity

Accuracy: ±1 in the 10th digit.

Capacity: In general, calculations can be displayed as a mantissa of

up to 10 digits, a 10-digit mantissa together with a 2-digit exponent up

±99

to 10

, or as an integer between –9999999999 and 9999999999.

Numbers used as input to a particular function must be within the allowable range for that function (as set out in the following table):

Functions Allowable input range

sin x, cos x, tan x

Deg: x < 4.5 × 10 Rad: x < 2.5 × 10 8 π rad

x < 5 × 10

Grad:

Also, for tan x:

Deg:

x ≠ 90 (2n +1)

Rad: x ≠

Grad:

(2n +1)

x ≠ 100 (2n +1)

where n is an integer.

–1

x, cos

–1

sin

tan

sinh x, cosh x

tanh x

–1

sinh

–1

cosh

x 1 ≦ x < 5 × 10 99

–1

tanh

log x, ln x 1 × 10

10 x –1 × 10

e x –1 × 10

x 0 ≦ x < 1 × 10

x ≦ 1

x < 1 × 10

x ≦ 230.2585092

x < 1 × 10

x < 5 × 10

x < 1

100

–99

≦ x < 1 x 10

100

＜ x ＜ 100

100

＜ x ≦ 230.2585092

100

x 2 x < 1 × 10 50

x–1 │x│＜1 × 10

X !

x < 1 × 10

≦

R→P 22

P→R 0

≦

Deg

Rad

：│θ│＜：│θ│＜

Grad

100

, X≠0

100

x ≦ 69, where x is an integer.

100

＜

1 × 10

yx +

r＜ 1 × 10

100

4.5 × 10 10 deg

2.5 × 10

：│θ│＜

5 × 10 10 grad

Also, for tan x:

：│θ│≠

n is an integer.

90 (2n+1)

(2n+1)

100 (2n+1)

Deg

Rad

Grad

where

│DD│, MM, SS.SS ＜ 1 × 10

≦ MM, SS.SS

x < 1 × 10

x y x > 0 : –1 × 10

x = 0 : y

< 0 : y = n, 1/(2n+1)

where

but –1 x 10

y > 0 : x ≠ 0, –1 x 10

100

< y log x < 100

> 0

n is an integer

100

y = 0 : x > 0 y < 0 : x =2n+1, l/n

n is an integer other than 0

where

but –1 x 10

：The integer, numerator, denominator

ab/c

nPr, nCr STAT x  < 1 × 10

Input and fraction symbols must in total be no more than 10 digits. Result integer, numerator and denominator are each less than 1 × 10 0

≦r≦n, n≦9999999999; n, r are integers.

0 ≦│Σx

：n≠0, S：n＞1,σ：n＞0

Range = 1 ~ r, 1

100

：Displayed as a fraction when the

, Σ x  < 1 × 10

│＜1 × 10

≦n≦r, 80 ≦r≦20400

→DEC 0 ≦ X ≦9999999999 (for zero or positive)

–9999999999

≦

→BIN

0 positive)

1000000000

≦ X ≦ –1 (for negative)

X ≦ 0111111111 (for zero or

≦ X ≦ 1111111111

(for negative)

→OCT 0 ≦ X ≦ 3777777777 (for zero or positive)

4000000000

≦ X ≦ 7777777777

(for negative)

→HEX 0 ≦ X ≦2540BE3FF (for zero or positive)

FDABF41C01

≦ X ≦ FFFFFFFFFF (for

negative)

Overflow and Error Conditions

The symbol E appears when any of the following conditions occur. Press [ ON/C ] to remove the overflow or error indicator.

When you attempt to perform a function calculation with a number

•

outside the allowable input range.

When you attempt to divide a number by 0.

•

When you have pressed the [ ( ] key more than 15 times in a

•

single expression.

When any result (whether intermediate or final) or the

•

accumulated total in memory is outside ±9.999999999 × 10

When there are more than six pending operations.

•

If the calculator becomes locked and pressing keys has no effect, press [ M+ ] and [ ENG ] at the same time. This unlocks the calculator and returns all settings to their default values.

Basic Calculations

The following examples of basic calculations assume that your calculator is in decimal base and with floating point display.

789.

DEG

579.00

DEG

456.00

DEG

579.00

deg

grad

100

rad

100

log

x 100

log y < 100

log

 y  100

100

; n, r are integer

123.

Mixed Arithmetic Calculations

1 + 2 × 3 = ? 1 [ + ] 2 [ × ] 3 [

–3.5 + 8 ÷2 = ?

3.5 [ +/– ] [ + ] 8 [

ENTER

[

]

ENTER

] 2

DEG

]

DEG

0.5

Parentheses Calculations

Operations inside parentheses are always executed first. You can specify up to 15 levels of parentheses in a single calculation. When you enter the first parenthesis, the and remains until each opening parenthesis has a corresponding closing parenthesis.

( 5–2 × 1.5 ) × 3 + 0.8 × (– 4 ) = ? 2 × ( 7 + 6 × ( 5 + 4 )) = ?

[ ( ] 5 [ – ] 2 [ × ] 1.5 [ ) ] [ × ] 3 [ + ] 0.8 [ × ] 4 [ +/– ] [

2 [ × ] [ ( ] 7 [ + ] 6 [ × ] [ ( ] 5 [ + ] 4 [

Note: It is not necessary to press [ ) ] before [

( ) indicator appears on the display

ENTER

]

ENTER

]

ENTER

DEG

2.8

DEG

122.

Repeating a Calculation

You can repeat the last number entered, or the last operation executed, by pressing [

Repeating the last number

3 × 3 = ? 3 × 3 × 3 = ?

3 × 3 × 3 × 3 = ?

Repeating the last arithmetic operation

321 + 357 = ? 654 + 357 = ?

579 – 159 = ? 456 – 159 = ?

18 × 45 = ? 18 × 23 = ?

18 × (0.5x10

96 ÷ 8 = ?

8 = ?

(1.2x10

) ÷ 8 = ?

Percentage Calculations

30% of 120 = ? 70% of 120 = ?

88 is 55% of what number? 30% mark up of 120 = ? 30% discount of 120 = ?

ENTER

3 [ × ] [

ENTER

[

]

ENTER

]

[

321 [ + ] 357 [

ENTER

654 [

579 [ – ] 159 [

ENTER

456 [

3 [ × ] 6 [ × ] 45 [

ENTER

23 [

) = ?

0.5 [ EXP ] 2 [

96 [ ÷ ] 8 [

ENTER

75 [

1.2 [ EXP ] 2 [

120 [ × ] 30 [ 2ndF ] [ % ]

ENTER

[

]

70 [ 2ndF ] [ % ] [

88 [

ENTER

[

]

120 [ + ] 30 [ 2ndF ] [ % ]

ENTER

[

]

120 [ – ] 30 [ 2ndF ] [ % ]

ENTER

[

]

ENTER

]

ENTER

]

ENTER

]

ENTER

]

ENTER

]

ENTER

]

ENTER

] 55 [ 2ndF ] [ % ]

DEG

27.

DEG

81.

DEG

678.

DEG

1011.

DEG

]

DEG

]

DEG

420.

297.

810.

414.

900.

12.

9.375

15.

36.

84.

160.

156.

84.

Memory Calculations

The M indicator appears when a number is stored in memory.

•

Recalling from memory does not delete the contents of memory.

•

The memory is not available when you are in statistics mode.

•

To copy the displayed number to memory, press [ X→M ].

•

To clear the memory, press [ 0 ] [ X→M ], or [ CE ] [ X→M ], in

•

that order.

3 × 5

+ 56 + 74 – 8 × 7 Total = ?

[ CE ] [ X→M ]

3 [ × ] 5 [ M+ ]

56 [ ÷ ] 7 [ M+ ]

74 [ – ] 8 [ × ] 7 [ M+ ]

[ MR ]

→

0 [ X

M ]

DEG

15.

18.

41.

Common Math Calculations

The following example calculations assume that your display is fixed at 2 decimal places.

Reciprocal, Factorial

= ?

25.1

5! = ? 5 [ 2ndF ] [ x! ] [

1.25 [ 2ndF ] [ x

Square, Square Root, Cube Root, Power, Other Roots

2 2 + 3 4 = ? 2 [ x 2 ] [ + ] 3 [ x y ] 4 [

5 ×

= ?

+34= ?

5 [ × ] 27 [ 2ndF ] [

√

34 [

72 [ 2ndF ] [

Logarithms and Antilogarithms

ln7 + log100 = ? 7 [ ln ] [ + ] 100 [ log ] [

10 2 = ? 2 [ 2ndF ] [ 10 x ] [

e 5 – e –2 = ?

5 [ 2ndF ] [ e [ 2ndF ] [ e

] [

ENTER

–1

] [

ENTER

]

√

] 9 [

ENTER

] [ – ] 2 [+/–]

ENTER

] [

ENTER

]

ENTER

√

] [ + ]

ENTER

]

DEG

]

0.80

DEG

120.00

DEG

]

85.00

DEG

20.83

DEG

]

1.61

DEG

]

3.95

DEG

]

100.00

DEG

148.28

Fraction calculations

Fractions are displayed as follows:

ENTER

→

]

ENTER

= 56

/c ]

ENTER

]

DEG

], or if a fraction was

DEG

ENTER

]

DEG

8∪ 4 」15

124 」15

9 ∪ 7」36

9.19

12.19

8 ∪ 2」3

12350.77

56 ∪ 5 」12

Note : The display is truncated if the integer, numerator, denominator

and fraction symbols together are more than 10 digits.

→

5 」12

Press [ 2ndF ] [ fraction.

+ 7

= 8

124

If you press [ ab/c ] after pressing [ combined with a decimal number, the answer is displayed as a decimal number.

+ 3

= 9.19

= 9

+ 3.75 = 12.19

Where possible, a fraction is reduced to its lowest terms after you press [ + ], [ – ], [ × ], [

119

= 8

A result is displayed in decimal format if the integer, numerator, denominator and fraction symbols are together more than 10 digits.

12345

= 12350.77

/c ] to convert the displayed value to an improper

3 4

2 [ ab/c ] 3 [ + ] 7 [ ab/c ] 3 [ ab/c ] 5 [

[ 2ndF ] [

5 [ ab/c ] 4 [ ab/c ] 9 [ + ] 3 [ ab/c ] 3 [ ab/c ] 4 [

[ ab/c ]

8 [ ab/c ] 4 [ ab/c ] 9 [ + ]

ENTER

3.75 [

] or [

3 [ ab/c ] 119 [ ab/c ] 21

ENTER

]

[

12345 [ ab/c ] 5 [ ab/c ] 16

[ + ] 5 [ ab/c ] 6 [ ab/c ] 13

ENTER

[

]

Converting Angular Units

You can specify an angular unit of degrees (DEG), radians (RAD), or grads (GRAD). You can also convert a value expressed in one angular unit to its corresponding value in another angular unit.

The relation between the angular units is:

180° =

radians = 200 grads

To change the angular unit setting to another setting, press

•

[ DRG ] repeatedly until the angular unit you want is indicated in the display.

After entering the value of an angle, press [ 2ndF ] [ DRG→]

•

repeatedly until the value is converted to the desired unit.

90° (deg) = ? (rad)

= ? (grad)

90 [ 2ndF ] [ DRG→]

[ 2ndF ] [ DRG

→

]

DEG

90.

RAD

1.57

GRAD

100.00

Trigonometric and Inverse Trigonometric Functions

Before undertaking a trigonometric or inverse trigonometric calculation, make sure that the appropriate angular unit is set.

3 sin 85° = ? 3 [ × ] 85 [ sin ] [

cos (

rad) = ?

[ 2ndF ] [ [ cos ]

ENTER

] [ ÷ ] 4 [

tan 150 grad = ? 150 [ tan ]

sin –1 0.5 = ? deg 0.5 [ 2ndF ] [ sin –1 ]

cos

? rad

–1

(

) =

√

] [ 2ndF ] [ x–1] [ 2ndF ]

2 [

–1

]

[ cos

tan –1 1 = ? grad 1 [ 2ndF ] [ tan –1]

]

ENTER

DEG

2.99

]

RAD

0.71

GRAD

DEG

30.00

RAD

0.79

GRAD

–1.00

50.00

Hyperbolic and Inverse hyperbolic functions

cosh1.5+sinh1.5 = ?

sinh –1 7 = ?

tanh 1 = ? 1 [ HYP ] [ tan ]

1.5 [ HYP ] [ cos ] [ + ] 1.5 [ HYP ] [ sin ] [

7 [ HYP ] [ 2ndF ] [ sin

ENTER

]

–1

]

DEG

4.48

DEG

2.64

DEG

0.76

Rectangular and Polar coordinates

Rectangular Coordinates Polar Coordinates

a + b i = r (cosθ + i sinθ)

Note: Before undertaking a coordinates conversion calculation, make

sure that the appropriate angular unit is set.

Converting from Rectangular to Polar

If a = 5 and b = 6, what are

5 [ a ] 6 [ b ] [ 2ndF ] [ R→P ]

r and

[ b ]

DEG

7.81

DEG

50.19

Converting from Polar to Rectangular

If r = 25 and θ= 56°, what are and

25 [ a ] 56 [ b ] [ 2ndF ]

→

[ P

R ]

[ b ]

DEG

13.98

DEG

20.73

Permutations and Combinations

! n

nPr =

How many permutations of 4 items can you select from a set of 7 items? How many combinations of 4 items can you select from a set of 7 items?

nCr =

)!rn(

−

! n

)!rn(! r

−

7 [ 2ndF ] [ nPr ] 4 [

7 [ 2ndF ] [ nCr ] 4 [

ENTER

]

DEG

840.00

DEG

35.00

Sexagesimal ↔ Decimal form Conversions

You can convert a sexagesimal figure (degree, minute and second) to a decimal number by pressing [ to a sexagesimal figure by pressing [ 2ndF ] [

] and convert a decimal number

Sexagesimal figures are displayed as follows:

׀ ׀



45 ׀ 30

Note: If the total number of digits in a DD, MM and SS.SS figure

exceeds 8, the figure is truncated.

= 12 degrees, 45 minutes, 30.5

seconds

Converting from Sexagesimal to Decimal

12 deg., 45 min.,

30.5 sec.= ?

Converting from Decimal to Sexagesimal

2.12345 = ? 2.12345 [ 2ndF ] [

] 45 [ ] 30.5

12 [ [

]

DEG

12.76

DEG



7 ׀24 ׀׀42

]

Base-n Calculations

Converting between bases

You can add, subtract, multiply, and divide binary, octal, and hexadecimal numbers in addition to decimal numbers. Select the number base you want by pressing [

→

[

DEC]. The BIN, OCT, and HEX indicators show you which base you are using. (If none of these indicators is displayed, you are using decimal base.)

→

BIN], [→OCT], [→HEX], or

The number keys that are active in a particular base are: Binary base: [ 0 ] and [ 1 ]

Octal base: [ 0 ] to [ 7 ]

Decimal base: [ 0 ] to [ 9 ]

Hexadecimal base: [ 0 ] to [ 9 ] and [ A ] to [ F ]

→

DEC] 31

31 (base 10) = ? (base 2) = ? (base 8)

= ? (base 16)

4 × 1B (base 16) = ? (base 2)

= ? (base 10) = ? (base 8)

[ 2ndF ] [

[ 2ndF ] [→BIN]

[ 2ndF ] [→OCT]

→

HEX]

[ 2ndF ] [ [ 2ndF ] [→HEX] 4 [ × ] 1B

ENTER

[

] [ 2ndF ] [→BIN]

[ 2ndF ] [→DEC]

→

[ 2ndF ] [

OCT]

DEG

31.

DEG BIN

11111.

DEG OCT

37.

DEG HEX

1F.

DEG HEX

6C.

DEG BIN

1101100.

DEG

108.00

DEG OCT

154.

Negative Numbers and Complements

In binary, octal, and hexadecimal bases, negative numbers are expressed as complements. The complement is the result of subtracting that number from 10000000000 in that number’s base. You do this by pressing [+/–] in a non-decimal base.

Calculate the complement of binary number 11011

[ 2ndF ] [

→

BIN ] 11011 [+/–]

DEG BIN

1111100101.

Complex Number Calculations

Press [ CPLX ] to enter complex number mode. The CPLX indicator appears on the display. You can add, subtract, multiply, and divide compl ex number s.

Complex numbers are generally represented as real part and

( 7 – 9 i ) + (15 + 10 i) = ?

bi is the imaginary part.

[ 2ndF ] [ CPLX ] 7 [ a ] 9 [ +/– ] [ b ] [ + ] 15 [ a ] 10 [ b ]

ENTER

[

] [ b ]

a + b i, where a is the

DEG CPLX

22.00

DEG CPLX

1.00

Note: Memory calculation is available in complex number mode.

Random Numbers

Press [ 2ndF ] [ RND ] to generate a random number between 0.000 and 0.999.

Unit Conversions

The unit conversion keys are [°F←→°C ], [ mmHg←→Kpa ], [ gal←→I ],

←→

[ lb

kg ] and [ oz←→g ]. The following example illustrates the general

procedure for converting values from one unit to another.

12 in = ? cm

98 cm = ? in

→

B ] [ 2ndF ] [ in←→cm]

12 [ A 98 [ 2ndF ] [ A

←→

[ in

cm ]

←

B ] [ 2ndF ]

DEG

30.48

DEG

38.58

Statistics

Press [ 2ndF ] [ STAT ] to enter statistics mode. The STAT indicato r appears on the display. In statistics mode you can calculate the following single-variable statistics:

n number of data items Σx sum of the values of all the data items

sum of the squares

Σx

mean value

s sample standard deviation

σ population standard deviation

/n)x(x

−

∑∑

−

/n)x(x

−

∑∑

Continued on other side

CP precision capability

LSLUSL −

σ 6

CPK process capability Min(CPU, CPL)

where CPU =

Note: In statistics mode, all function keys are available except those

used for base-n calculations.

Ex. 9: Enter the following data {2, 5, 5, 5, 5, 9, 9, and 9} and

calculate Σx, Σx 12 and LSL value = 2.

, n, x, S, CP, and CPK, where USL value =

xUSL −

CPL =

σ 3

In STAT mode [ 2ndF ] [ STAT ]

[ DATA ] 2

[ DATA ] 5

Enter all data

[ DATA ] 5

[ DATA ] 9

ENTER

]

[

= ? [ x ]

n = ? [ n ]

S = ? [ S ]

Σx = ? [ 2ndF] [ Σx ]

Σx 2 = ?

[ 2ndF ] [ Σx

]

σ= ? [ 2ndF ] [ σ ]

[ 2ndF ] [ CP ] 12

ENTER

[

CP = ?

ENTER

[

] 2

]

[ 2ndF ] [ CPK ]

ENTER

[

CPK = ?

Note: The calculator retains the data you have entered until you exit

statistics mode. The data is retained even if you turn off the calculator or it automatically turns off.

ENTER

[

]

LSLx −

σ 3

DEG STAT

0.00

6.13

8.00

2.59

49.00

347.00

2.42 σ

12.

USL CP

LSL CP

0.69

CPK

12.00

USL CPK

2.00

LSL CPK

0.57

Viewing Statistics Data

Press [ DATA ] or [ you have entered. (If you press [ DATA ] the item number of the data appears briefly before the value.)

Ex.10: View the data entered in Ex. 9.

Method 1

1. Press [ 2ndF ] [ EDIT ] to enter edit mode.

2. Press [ DATA ] once to view the first data item.

DEG ED STAT

3. Continue pressing [ DATA ] to display each data item. You will see data 2, 5.00, data 3, 5.00, data 4, 5.00, data 5, 5.00, data 6,

9.00, data 7, 9.00, data 8, 9.00 in sequence.

Method 2

1. Press [

2. Continue pressing [

5.00, 5.00, 5.00, 5.00, 9.00, 9.00, 9.00 in sequence.

ENTER

] in edit (ED) mode to view the statistics data

dAtA 1

ENTER

1.5 seconds

] once to view the first data item.

ENTER

DEG ED STAT

→

DEG ED STAT

2.00

] to display each data item. You will see

Adding a Data Item

Ex. 11: To add a 9th data item, of value 10, to the Ex. 9 dataset:

1. Press [ DATA ] 10

The calculator updates the statistics as you enter data. You can then recall the statistics to get :

Σx

= 447.00 and σ= 2.59.

= 6.56, n = 9.00, S = 2.74, Σx = 59.00,

DEG ED STAT

10.

Editing Statistics Data

Ex.12: Change the value of data item 1 in Ex. 9 from 2 to 3.

Method 1

1. Press 2 [ 2ndF ] [ DEL ] 3

Method 2

1. Press [ 2ndF ] [ EDIT ]

2. Display 2 by pressing [ DATA ] or

ENTER

[

]

3. Enter 3 to overwrite 2.

4. Press [

ENTER

] to make the change.

DEG ED STAT

0.00

2.00

5. Press [ 2ndF ] [ EDIT ] to exit edit mode.

Ex.13: Based on Ex.9, delete the first data entry (of value 2).

Method 1

1. Press 2 [ 2ndF ] [ DEL ] to delete 2.

Method 2

1. Press [ 2ndF ] [ EDIT ]

2. Display 2 by pressing [ DATA ] or

ENTER

[

3. Press [ 2ndF ] [ DEL ]

DEG ED STAT

0.00

2.00

5.00

4. Press [ 2ndF ] [ EDIT ] to exit edit mode.

Delete Error

If you try to delete a value that is not in the dataset, dEL Error appears. (Existing data is not affected.)

Ex.14: Delete 7 from the dataset in Ex.9.

1. Press 7 [ 2ndF ] [ DEL ]

2. Press any key to clear the message.

Ex.15: Delete 5 × 5 from the dataset in Ex.9.

1. Press 5 [ × ] 5 [ 2ndF ] [ DEL ]

2. Press any key to clear the message.

DEG STAT

dEL Error

DEG STAT

dEL Error

DEG STAT

0.00

Weighted Data Entry Method

Instead of entering each data item individually, you can enter the value and the number of occurrences of that value (up to 255). The data from Ex.9 can be entered as follows:

Value Number of occurrences

2 1 5 4 9 3

Alternative method

[ DATA ] 2 [ DATA ] 5 [ × ] 4 [ DATA ] 9 [ × ] 3

where item 1 = 2, items 2 to 5 = 5, and items 6 to 8 = 9.

Error Conditions

The indicator FULL appears when any of the following conditions occur. Further data entry is not possible. Press any key to clear the indicator. Providing that you remain in statistics mode, previously entered data entries are unaffected.

You attempt to enter more than 80 data items.

•

The number of occurrences of of any particular data value is

•

greater than 255

The product of the number of data items and the number of

•

occurrences is greater than 20400.

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HP part number: F2212-90001