The scatter plot shows the number of years of experience, x, and the hourly pay

Question

The scatter plot shows the number of years of experience, x, and the hourly pay rate, y, for each of 23 cashiers in California. (a) Write an approximate equation of the line of best fit for the data. It doesn't have to be the exact line of best fit. (b) Using your equation from part (a), predict the hourly pay rate for a cashier with 10 years of experience. Note that you can use the graphing tools to help you approximate the line. (a) Write an approximate equation of the line of best fit. y = (b) Using your equation from part (a), predict the hourly pay rate for a cashier with 10 years of experience. $

Explanation / Answer

approx best fit:

y intercept:

7

slope --> 0 ,7 ; 18, 16

m = (16-7)/(18-0) = 0.5

y = 0.5*x+7

b)

find the pay rate at t = 10 years

y = 0.5*(10)+7

y = 12 USD approx

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