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Casio fx-9750G PLUS User Manual

Page 315

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287

µ

1

G

µ

2

.............. direction of test

t

......................

t

value

p

..................... p-value

df

.................... degrees of freedom

o

1

.................... sample 1 mean

o

2

.................... sample 2 mean

x

1

σ

n

-1

............... sample 1 standard deviation

x

2

σ

n

-1

............... sample 2 standard deviation

n

1

.................... sample 1 size

n

2

.................... sample 2 size

Perform the following key operations to display a graph.

J

ccccccc

6

(DRAW)

The following item is also shown when Pooled = On.

x

p

σ

n

-1

............... pooled sample standard deviation

u

u

u

u

u

LinearReg t Test

LinearReg

t

Test treats paired-variable data sets as (

x

,

y

) pairs, and uses the

method of least squares to determine the most appropriate

a

,

b

coefficients of the

data for the regression formula

y

=

a

+

bx

. It also determines the correlation

coefficient and

t

value, and calculates the extent of the relationship between

x

and

y

.

b

=

Σ

( x – o)( y – p)

i

=1

n

Σ

(x – o)

2

i

=1

n

a

= p

bo

t

= r n – 2

1 – r

2

a

: intercept

b

: slope of the line

Perform the following key operations from the statistical data list.

3

(TEST)

2

(

t

)

3

(REG)

Tests

18 - 6

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