Math Solutions

(See Solution) An study is being carried out to determine the relationship between smoking and lung cancer. The following data shows the number of smokers

Question: An study is being carried out to determine the relationship between smoking and lung cancer. The following data shows the number of smokers of a brand of cigarettes called CIG1930 (x) and the number of mortalities (y) which occurred over a period of observation.

X Y
1300 20
1100 46
1100 35
510 25
500 15
490 24
480 18
380 17
300 11
250 9
230 6
  1. Obtain the quantities S xx , S xy , and S yy
  2. Obtain the least squares equation of the linear relationship between X and Y
  3. Obtain the correlation coefficient for X and Y
  4. Obtain the SSE
  5. Obtain the coefficient of determination for the fitted linear relationship.

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