Average salary is about $957.95 and average IQ is about 101. (ii) Estimate the simple regression model where a one-point increase in IQ change wage...

Average salary is about $957.95 and average IQ is about 101.28. (ii) Estimate the simple regression model where a one-point increase in IQ change wage by a constant dollar amount. Use this model to find the predicted increase in wage for an increase in IQ of 15 points. Does IQ explain most of the variation in wage?