The following data represent 11 observations of two quantitative variables:

x = contact hours with client, y = profit generated from client.

x y x y x y x y 45 2,345 54 3,811 34 -700 24 1,975 56 4,200 24 2,406 45 3,457 32 206 26 278 23 3,250 47 2,478

a. Construct a scatter diagram of the data. Indicate whether the diagram suggests a linear or nonlinear relationship between the dependent and independent variables.

b. Determine how much influence extreme data points will have on your perception of the relationship between the independent and dependent variables by deleting the three data points with the smallest x value. What appears to be the relationship between the dependent and independent variables?