Question

Step 1

**a) Computation of mean square error:**

Step-by-step procedure to obtain the mean square error using EXCEL software:

- Create the variable time in first column and 2 indicator variables in second and third columns.
- Select
**Data > Data Analysis > Regression**. - Click
**OK**. - Under Input
**Y Range**enter**$B$1:$B$6**. - Under Input
**X Range**enter**$A$1:$A$6**. - Check
**Labels**. - Click
**OK**.

Output using EXCEL software is given below:

Step 2

**Mean square error:**

From the ANOVA table in output, the mean square error of the regression is found to be **67.6.**

Step 3

**b) Standard error of the estimate:**

Under regression statistics in the output, the standard ...

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