15. Strawberries II The following data

(Exercise 16, Section 12.2) were obtained in an experiment relating the dependent variable, y

(texture of strawberries), with x (coded storage temperature).

Construct the ANOVA table or use the information from Exercise 16 (Section 12.2) to answer the following questions:

a. What is the best estimate of 2 s , the variance of the random error e?

b. Do the data indicate that texture and storage temperature are linearly related? Use a 5.05.

c. Calculate the coefficient of determination, r2.

d. Of what value is the linear model in increasing the accuracy of prediction as compared to the predictor, y?

Transcribed Image Text:

y -2 -2 0 2 4.0 3.5 2.0 0.5 0.0 28