The following table gives the crude male death rate for lung cancer in 1950 and the per capita consumption of cigarettes in 1930 in various countries. Figure 13 shows the least-squares line for the data.

(a) Obtain the equation of the line in Fig. 13.
(b) In 1930, the per capita cigarette consumption in Finland was 1100. Use the equation found in part (a) to estimate the male lung cancer death rate in Finland in 1950.

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Cigarette Consumption (Per Capita) Lung Cancer Deaths Country (Per Million Males) Norway 250 95 120 Sweden 300 350 Denmark 165 Australia 170 470 200 Denmark 160 Australia 120 Sweden 80 - Norway- 40 0– + 200 250 300 350 400 450 500 Per capita cigarette consumption Lung cancer deaths per million males