Question

Q2. An economist is interested in the relationship between the disposable income of a family and the amount of money spent annually on food. For a preliminary study, the economist takes a random sample of TEN middle-income families of the same size father, mother, two children). The results are as follows, where x denotes disposable income. in thousands of dollars. and y denotes food expenditure. in hundreds of taka. x 30 36 27 20 16 24 19 25 20 34 y 35 30 42 40 37 26 39 43 40 51 a. . Identify the predictor and response variables. b. Determine the correlation coefficient and coefficient of determination and comment on them. c. Determine the regression equation for the data. d. Graph the regression equation and the data points.

          Q2. An economist is interested in the relationship between the disposable income of a family and the amount of money spent annually on food. For a preliminary study, the economist takes a random sample of TEN middle-income families of the same size father, mother, two children). The results are as follows, where x denotes disposable income. in thousands of dollars. and y denotes food expenditure. in hundreds of taka.

x 30 36 27 20 16 24 19 25 20 34
y 35 30 42 40 37 26 39 43 40 51

a. . Identify the predictor and response variables.
b. Determine the correlation coefficient and coefficient of determination and comment on them.
c. Determine the regression equation for the data.
d. Graph the regression equation and the data points.

Q2. An economist is interested in the relationship between the disposable income of a family and the amount of money spent annually on food. For a preliminary study, the economist takes a random sample of TEN middle-income families of the same size father, mother, two children). The results are as follows, where x denotes disposable income. in thousands of dollars. and y denotes food expenditure. in hundreds of taka.

x 30 36 27 20 16 24 19 25 20 34
y 35 30 42 40 37 26 39 43 40 51

a. . Identify the predictor and response variables.
b. Determine the correlation coefficient and coefficient of determination and comment on them.
c. Determine the regression equation for the data.
d. Graph the regression equation and the data points.

Added by Andre C.

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