A taxi-company owner in Kuala Lumpur has six cars of different ages. He records the annual cost of repairs (in Malaysian Ringgit). Using the data below, and the least squares method, work out the gradient (b) of the regression line (round to the nearest whole number).

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The Answer of A taxi-company owner in Kuala Lumpur has six cars of different ages. He records the annual cost of repairs (in Malaysian Ringgit). Using the data below, and the least squares method, work out the gradient (b) of the regression line (round to the nearest whole number).

A Taxi-Company Owner in Kuala Lumpur Has Six Cars of Different