A group of band instructors answered a survey about hours of rehearsal per week and number of competitions won. The graph shows
the results of this survey. Based on these results, if a band practices 5 hours per week next season, which is the best estimate of the number of competitions the band can expect to win?
A.
36
B.
31
C.
27
D.
24
This linear regression was constructed by relating the hours practiced per week and the number of competitions won.
Going by this graph, the number of competitions they can expect to win at 5 practices a week is 31.
This is derived by looking for the point where 5 competitions on the x-axis intersects with the line. This point is at 31 competitions on the y axis which would make it the answer.
