In an area of Russia, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushels per acre). The data for a 9 year period is as follows:
The equation of the line of least squares is given as
= -9.12 + 4.38x. What would be the expected number of inches of rain if the yield is 60 bushels of wheat per acre?
◦ 64.74
◦ 253.68
◦ 11.62
◦ 15.78