of fluctuations in insurance coverage, the average price paid out of pocket (p)
by patients of an urgent care center varied, as the table shows, The number of
visits per month (Q) also varied, and an analyst believes the two are related.
The analyst also thinks the data show a trend. Run a regression of Q on P and
Period to test these hypotheses. Then use the estimated parameters a, b, and c
and the values of Month and P to predict Q(number of visits). The prediction
equation is Q = a+(b month) +(c x P).