also used for scratch.

M

Regression coefficient (slope of a straight line).

R

Correlation coefficient; also used for scratch.

X

The x–value of a data pair whenˆentering data; the

 

hypothetical x when projecting y ; or xˆ

 

(x–estimate) when given a hypothetical y.

Y

The y–value of a data pair when entering data; the

 

ˆ

 

hypothetical y when projecting xˆ ; or y

 

(y–estimate) when given a hypothetical x.

i

Index variable used to indirectly address the correct

 

ˆ

 

–, y –projection equation.

Statistics registers Statistical accumulation and computation.

Example 1:

Fit a straight line to the data below. Make an intentional error when keying in the third data pair and correct it with the undo routine. Also, estimate y for an x value of 37. Estimate x for a y value of 101.

X

40.5

38.6

37.9

36.2

35.1

34.6

Y

104.5

102

1.00

97.5

95.5

94

Keys:

WS

40.5 f

104.5f38.6f102f

Display:

Description:

%@)

Starts straight–line routine.

&@value

Enters x–value of data pair.

%@)

Enters y–value of data pair.

&@) Enters x–value of data pair.

%@) Enters y–value of data pair.

Now intentionally enter 379 instead of 37.9 so that you can see how to correct incorrect entries.

Keys: Display:Description:

379 f

&@) Enters wrong x–value of data pair.

Statistics Programs 16–9

File name 32sii-Manual-E-0424

 

Printed Date : 2003/4/24

Size : 17.7 x 25.2 cm