Problem

Apple Products The table lists the worldwide average household spending (i...

Apple Products The table lists the worldwide average household spending (in dollars) on Apple products for selected years.

(a) Use regression to find a formula ƒ(x) = ax + b so that ƒ models the data.

(b) Interpret the slope of the graph of y = ƒ(x).

(c) Estimate the average household spending on Apple products in 2014 and compare it with the actual value of $343.

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Solutions For Problems in Chapter 1.4

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