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Performing Statistical Calculations

kEstimated Value Calculation ( , )

After drawing a regression graph with the STAT mode, you can use the RUN MAT mode to calculate estimated values for the regression graph’s x and y parameters.

Example

To perform a linear regression using the nearby data

 

and estimate the values of ţ and when xi = 20 and

 

yi = 1000

1.From the Main Menu, enter the STAT mode.

2.Input data into the list and draw the linear regression graph.

3.From the Main Menu, enter the RUN MAT mode.

4.Press the keys as follows.

ca(value of xi)

K5(STAT)2(ţ)w

The estimated value ţ is displayed for xi = 20.

baaa(value of yi)

1()w

xi

yi

10

1003

15

1005

20

1010

25

1011

30

1014

The estimated value is displayed for yi = 1000.

# You cannot obtain estimated values for a Med-

quartic regression, sinusoidal regression, or

Med, quadratic regression, cubic regression,

logistic regression graph.

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