HP 28S User Manual

STAT

~+

TOT

COU

UTPC

HP-28S

statistics

~

MEAN CORR

UTPF

commands

n x m matrix called

matrix is

The not the numbers), data statistics matrix . data

Data

defined

current

already

statistics matrix

exist,

command

and

point

entered

points

that

Point

1

2 X

to

when

~

+. A

is

stored

The n dimension

have

N~

SDEV

COY

UTPN

deal

the

current statistics matrix.

be

a matrix

~DAT

you

begin

data

point

as

one

sets

the m dimension

been

entered

Coordinate

1 2 .

X

11

21

CU

VAR

LR

UTPT

with

statistical

stored

in

the

is created automatically, if it

entry

of

statistical is a vector row

in

of

the

statistics matrix.

(number

X

12

X

22

as

illustrated

of rows) is

Number

STO~

MAX~

PRDEV

COMB

data

The

variable

m

coordinate

of

below:.

..

.. .

...

RCU

MIN~

PERM

collected in

current

data

statistics

~DAT.

points values (real

The

columns)

the

number

m

X

X2m

1m

does

with

of

an

first

the

of

n

Certain of numbers, the list tion

statistics

the

statistics matrix. User variable

the

columns

are

the

slope

of

the

linear

X

commands

first two

with

the

and

regression

n1

intercept

combine

of

which

command

X

n2

data

~PAR

identify

COL~.

computed

.. .

from two specified

contains a list

the

two

columns. You

The

from

last two

the

numbers

most

LR.

Dictionary

Xnm

columns

of

four

real

select

in

the

recent execu-

245

un

STAT

Because ndry the

The

(covariance)

ple

If

the

lation

1.

2.

3.

4.

These data

~DAT

commands

specific statistics

commands

calculate

of

the

population. These

data

represent

statistics as follows.

Execute data.

Execute Execute SDEV,

population. Execute ~-

data.

~+

commands

to

or

delete

and

~PAR

are

ordinary

to recall, view,

commands

SDEV (standard deviation),

sample

the

entire

MEAN

~+

~-

to

add

VAR,

DROP

allow

data

from

return a data

you to select a statistics matrix,

or

alter their contents, in

that

statistics using

commands

population,

the

mean

or

COY.

to

remove

the

matrix.

variables, you

deal

with

VAR

data

that

are described in detail below.

you

can

point

representing

data

point

to

The

result is

the

mean

data

CL~

can

addition

the

variables.

(variance),

represent a sam-

calculate

the

data.

the

statistics for

point

STO~

and

use

ordi-

and

the

popu-

mean

from

RCL~

to

COY

the

add

~+

~

+

adds

~DAT.

246

[X1

[[x11

one

or

Dictionary

Level 1

x

X2

•..

X12

more

Sigma Plus

xm]

...

x1m]

data

I

..

.. ..

points to

the

current

Command

statistics matrix

...

STAT

For a statistics matrix

~+

in several ways:

Entering one

gument

Entering one

argument

Entering several

n

rows

of

In

each

case,

rent

statistics matrix creates it as does

exist, number doesn't

~-

data

for

~

+ is a real

data

for

~

+ is a vector

m real

the

an

n x m matrix

an

error occurs if it

of

coordinate

match

the

data

coordinate

number

with

m columns, you

point with a single coordinate value.

number

point with multiple coordinate values.

points.

of

.

m real

The

can

coordinate

argument

enter

for

values.

~

the

argument

+ is a matrix

values.

stored

values

values are in

~DAT.

stored

does

in

of

columns

Sigma Minus

not

each

..

added

If

~DAT

in

the

contain

data

in

as

new does

variable

a real matrix,

point

entered

~DAT.

Level 1

x

rows

to

not

exist,

~DAT.

If

with

Command

The

the

cur-

~+

~DAT

or

if

~+

for

ar-

of

the

~

-

returns corresponding by

~+

into

matrix is

The to

the

deleted

vector

returned

statistics matrix

a vector

to

the

of

the

coordinate

statistics matrix

.

by ~ -

m real

by

~

numbers,

values

~DAT.

can

be

+ .

in

The

edited

or

one

number

the

last

data

last

row

or replaced,

Dictionary

of

if m =

point

the

then

1,

entered

statistics

restored

247

..• STAT

N~

returns stored of

CL~

STO~

the

in

matrix.

clears

the

number

~DAT.

The

the

statistics matrix

of

number

Level 1

obj

Sigma N

It

data

points

of

points

Clear Sigma

It

by

purging

Store Sigma

It

Level 1

n

entered

is

equal

the

in

the

statistics matrix

to

the

number

~DAT

Command

of

Command

variable.

Command

rows

STO~

~DAT.

RCL~

takes

returns rectory. (when

248

~DAT

Dictionary

To

an

object from

the

recall

doesn't

Recall Sigma

contents

the

of

statistics matrix

exist

in

the

stack

Level 1

It

variable

current

and

stores it

obj

~DAT

from

from a

directory), execute

in

the

parent

variable

Command

current

di-