Homework SourseThe marketing manager of a large supermarket chain would lik
The marketing manager of a large supermarket chain would like to use shelf space to predict the sales of petfood random sample of 12 equal size stores is selected. The shell space X, and sales for the week in dollars why, are observed.
A. Is it necessary to compute the Durbin Watson statistic in this case? Explain
B. Under what circumstances is it necessary to computer been watching statistic before proceeding with the last squares method of regression analysis?
The marketing manager of a large supermarket chain would like to use shelf space to predict the sales of petfood random sample of 12 equal size stores is selected. The shell space X, and sales for the week in dollars why, are observed.
A. Is it necessary to compute the Durbin Watson statistic in this case? Explain
B. Under what circumstances is it necessary to computer been watching statistic before proceeding with the last squares method of regression analysis?
A. Is it necessary to compute the Durbin Watson statistic in this case? Explain
B. Under what circumstances is it necessary to computer been watching statistic before proceeding with the last squares method of regression analysis?
Solution
a. The Durbin Watson statistics is not necessary in this case. The prediction can be made by the least square method.
b. It is necessary to compute the Durbin Watson statistic before proceeding with the last squares method of regression analysis when there is a time lag.
