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00011

HP-21S

Stat/Math

Calculator

Owner’s

Manual

HEWLETT

(bfl]

Edition3June
Reorder

PACKARD

Number

1990

00021-90025

Notice

For

warranty

and

151.

This

manual

are

subjecttochange

no

warrantyofany

limited

particular
or

for

incidentalorconsequential

furnishing,

herein.

o

Hewlett-Packard
adaptation,ortranslationofthis
written
the

copyright

The

programs

are

reserved.
without
prohibited.

and

to,

the

purpose.

regulatory

and

any

implied

examples

kind

Hewlett-Packard

information

without

notice.

with

regardtothis

warrantiesofmerchantability

performance,oruseofthis

Co.

1989.

All

permissionofHewlett-Packard

laws.

that

Reproduction,

prior

written

control

your

adaptation,ortranslationofthose

permissionofHewlett-Packard

for

this

calculator,

contained

herein

are

Hewlett-Packard

manual,

Co.

shall

notbeliable

damagesinconnection

manualorthe

rights

reserved.

Reproduction,

manualisprohibited

Company,

calculator

are

exceptasallowed

copyrighted

see

provided

Company

including,

and

fitness

for

with

examples

without

and

Co.isalso

pages

“as

is”

and

makes

but

not

for

a

any

errors

the

contained

prior

under

all

rights

programs

148

Corvallis
1000
Corvallis,

Division

N.E.

Printing

Edition
Edition
Edition

1
2

3

Circle

OR

97330, U.S.A.

History

Blvd.

March
July
June

1989

1990

1989

Mfg.
Mfg.
Mfg.

No.

00021-90026

No.

00021-90042

No.

00021-90043

Welcome

Your

HP-21S
engineering
products
offer
service.

and

for50years.

expertisetosupport

to

reflects

the

manufacturing

Hewlett-Packard

Hewlett-Packard

Our

calculators

This
pollutants
variations

Both
caseofuse.Weadded
the

calculator.

Advanced

long
CMOS

toberetained
The

microprocessor

computations,
Extensive

adverse
and

data

are

madetoexcel

calculatorisdesignedtowithstand

(smog,

thatitmay

the

calculator

materials

keyboard

(low-power)

research

effectsofstatic

lossincalculators.

ozone),

life

indefinitely

using15digits

the

superior

its

that

use

HP-21S

quality

have

stands

(see

inside

Quality

andtobe

temperature

encounterineveryday

and

its

manual

many

and

permanent,

andapositive

electronics

and

has

been

has

createdadesign

electricity,apotential

have

examplestohighlight

feeltothe

andaliquid-crystal

the

batteriestolast

optimized

internally

and

attentiontodetail

distinguished

behind

back

easytouse.

the

extremes,

been

molded

for

for

that

this

cover)

drops,

and

work

life.

designed

key

lettering

keys.

fast

and

precise

has

minimized

causeofmalfunctions

in

Hewlett-Packard

calculator

and

worldwide

vibrations,

humidity

and

the

varied

display

a long

reliable

results.

tested

uses

provide

allow

time.

the

—we

for

of

a

data

Features

Probability

m

Normal

m

Student’stdistribution.

distribution

distribution.

mFdistribution.

m)?(Chi-square)

Six

built-in

m

Two

m

Linear
m
m

Binomial
m

Time

One
Factorial,
Essential
Polar
Keystroke
Large
Ten

Accurate

Detachable

programs.

One

sample
sample

regression

Chi-square

distribution.

valueofmoney.

and

two

variable

combinations,

scientific

/rectangular

programming,.

12-character

data

registers

math,

quick

statistics.
test

statistics.

test.

functions.

conversions.

display.

and99program

12-digits

reference

functions

and

distribution.

test

statistics.

statistics

with

permutations.

lines.

witha1

0:499

guide.

inverses.

linear

regression.

exponent

range.

Contents

1

10

10

10
12
12
12
13
14
14
15
15

15
16
17

17
18

19
20
20
21

Getting

On,

Simple
Understanding

Cursor
Clearing
Annunciators
Shift
INPUT
SWAP

Alpha
Introducing
Display

Specifying

Places
Displaying

Scientific

Interchanging
Full
RangeofNumbers
Messages

Started

Off,

and

Display

Arithmetic

the

the Calculator

Keys

Key

Key

Keys

the

FormatofNumbers

the

(FIX)

the

and

Precisionofa

Contrast

Calculations

Display

Math

NumberofDisplayed

Full

Engineering

the

Number

and

Keyboard

Functions

PrecisionofNumbers

Notation

Period

and

Comma

(SHOW)

Decimal

(ALL)

Contents

5

2

3

22

22
22
24
25
25
26

29

29
30
31

31

32
33
33
33
34
35
37
39

Arithmetic

Chain

Operator

Using
Reusing
Exchanging
Using

Numeric

General
Reciprocal
Percent

Percent

Percent
Pi

(7)

Trigonometric

Changing

Trigonometric

Angle

Coordinate
PartsofNumbers

and

Calculations

Priority
Parentheses
the

Previous

Two

Storage

Functions

and

Logarithmic

Functions

Change

the

and

Hour

Conversions

Storage

and

Pending

Result

Numbers

Registers

Modes

Trigonometric

Functions

Conversions

(SWAP)

Functions

and

Functions

Registers

Operations

(LAST)

Mode

4

6

Contents

40

40
40
40
41
42
43
44

44
45

Probability

Probability

Factorial
Combinations
Random

Distributions

Normal
InverseofUpper
Distribution
Student’stUpper
InverseofUpper
t

Distribution

Number

Upper

and

Distributions

and

Permutations

and

Seed

Tail

Probability

Tail

Probability—Normal

Tail

Probability

Tail

Probability—

Student’s

46
47
48

49

50

53
53
54
55
55
56
56
56
56
57
59

61

63
65
69

69
71

F

Distribution
InverseofUpper
Upper

Tail

Distribution

InverseofUpper
Distribution
HowtoConvert

Statistical
Clearing
SummaryofStatistical
Entering

Correcting

Mean,
Linear
Weighted

Built-in
One

Statistical

Statistical

One-Variable

Two-Variable

Correcting
Correcting

Standard

Regression

Sample
Population
Interval

Example:
Example:

Upper

Tail

Probability—Chi-Square

(x?)

Tail

(x?)

From

Calculations

Data

Calculations

Data
Statistics
Statistics

Statistical

One-Variable
Two-Variable

Mean

Library

Statistics

Mean—TestofHypothesis/Confidence

Estimate

Data

Deviations,

and

Estimation

(1-StAt)

Population
Population

Tail

Probability

Probability—F

Distribution

Probability—Chi-Square

Upper

Tail

and

Weighted

Mean

Data

Data

and

Summation

Standard

Standard

Deviation
Deviation

Statistics

Known

Unknown

74

74
75
77

79
80

Population

Example:

Example:
Example:
of

MeansofTwo

Example:

Two

Sample

Proportion

Confidence

Interval

TestofHypothesis

TestonPaired

Differences

Populations

Calculating

Test

Sample

Statistics

(2-StAt)

Estimate

Size

(Paired

t)

Contents

7

84

84

88

90

90

93
95

98

99

99
103
104

105
106

108

111
113
115
116
116
118
119

Difference
of

Hypothesis/Confidence
Example:
and

Example:

and

Difference

Example:

Example:

Linear

Data

Between

Population

Unknown

Population

Known

Between

Difference

Difference

Regression

Entry

Population

Population

Test

Statistics

Standard

Standard

Non-Zero

Zero

TestofHypothesis/Confidence

Example:
Example:

Example:

Given

Chi-Square

Example:
of

Fit)

Example:
of

Fit)

Binomial

Time

ValueofMoney
Example:
Example:
Example:
Example:
Example:
of

Non-Uniform

Slope
EstimatedyasaMean
EstimatedyasaParticular

x

Test

(CHI-2)

Single

Classification

With

Unequal

Single

With

Equal

Distribution

Expected

Classification

Expected

(bin)

(FinAnCE)
Student
Home
Savings
Compound
Net

Loan

Mortgage

Account

Present

Cash

Interest/Discount

Value

Flows

Means—Test

Interval

Deviations

Deviations

Proportions

(Lr-StAt)

Interval

(Including

Values

(Including

Values

(NPV)

Estimation

Equal

Unequal

Estimation

Value,

Given

Value,

Goodness

Goodness

Case

Tables

x

7

8

Contents

122

124
126
127
128
129

Programming

Creating

Positioning
Running

Programs
Program
Entering

Programs

Boundaries
Programs
the

Program

(LBL

Pointer

and

RTN)

129
130
130
131
131
132
133
134
138
138
139
141 Sample

143
143

144

144
144
145
145
146
147
148
149
151

Starting
Starting

Stopping

Clearing

Editing
Stepping
Sample

Programs
Programs

Programs

Programs

Programs

Through

Program:
Subroutines
Branching

Branching
Conditional

and

Conditionals

(GTO)

Instructions—Decisions

Program:

Data

Available

Program

Nonprogrammable

Support,

Calculator

Batteries,

Support
AnswerstoCommon
Environmental
Changing
Testing
The
Limited
If

Calculator

Self-Test

One-Year

the

Calculator

Regulatory

Limits

the

Batteries

Information

With

XEQ

With

GTO

Programs

Pythagorean

Standard

DeviationofGrouped

Memory

Functions

and

Questions

Operation

Warranty

Requires

Service

and

Theorem

Service

R/S

and

Control

152

154

Messages

Index

Contents

9

Getting

On,

Off,

Started

and

Display

Contrast

|

Since

the

information

itself

off

three

battery

possible

To

change

Simple

|

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turnonyour

turn

the

()

(GFF)).

the

calculator

you’ve

approximately10minutes

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symbol

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digits.

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labeled

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29

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33

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38

3:

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3:

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39

Probability

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48

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of

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know

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4:

Probability

and

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49

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value

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4:

Probability

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51

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the

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can

calculate

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distributions

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the

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upper

upper

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The
for
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Statistical

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53

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5:

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5:

Statistical

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55

Two-Variable

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you

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reenter

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56

5:

Statistical

Calculations

Mean,

Standard

Statistics

L

OsseOs
O00000
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oooaoo
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can

calculate

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you

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statistics,n,£x,

can

also

population

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the

sample

calculate

standard

statistics

the

deviationofthe

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mean

standard

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and

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captain
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of

sample
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4.5
4

2

3.25

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3.6

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deviationofthe

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formulaV£x?/n

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1.0000

2.0000

3.0000

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how

longittakes

six

membersofher

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calculate

the

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first
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third
fourth

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5:

Statistical

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57

RCL])

7

8

4

=]

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standard

[«1)[SWAP]

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are

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the

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larger,

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calculatedby[®](Sx,Sy]

complete

the

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setofdata.

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the

population

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7.
the

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kilograms.
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185
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Description:

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and

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weights.

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(x).

meanofweights

).

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population

deviation

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heights

of

77

their

registers.

of

for

58

5:

Statistical

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(«)(SWAP

6

Linear

4.7104

331.0000

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x,y

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data.

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statistical

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mustbeat

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then

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then

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5:

Statistical

Calculations

59

Example.
concentrationofone

varying

are observed:

only

X

Y

The

rate

the

initial

|0.050

|[0.0062

of a

certain

chemical.

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the

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calculate

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60

5:

Statistical

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Estimate

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5:

Statistical

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61

Equations:

62

5:

Statistical

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Built-in

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