Suppose a man has a hot dog stand called PCA Hot Dogs and he would like to know how it is doing relative to industry-wide performance of all hot dog stands. The sales data for PCA Hot Dogs is attached.

Use the Durbin-Watson test to determine whether there is positive autocorrelation in the errors.

Draw conclusions about the existence of autocorrelation and use them to inform on the performance of PCA Hot Dogs. Include a correlogram.

LINK TO DATA

https://drive.google.com/file/d/1LJXWf9W_AsKPzeGkLF38nqVKev9xb_pX/view?usp=sharing