For Q.2 no data given
The answer to Question No.3
a) An explanatory variable is an independent variable. When a variable is independent, it is not affected at all by any other variables. So here, the explanatory variable should be the years of experience because it is independent of salary but salary is dependent on the years of experience.
b) The relationship between two variable will be positive because as one increase the other will definitely increase. So in this way, they are directly proportional to each other. As we know, more experience means more annual Income.
. point) Caleulate the correlation coefficient r. This table is intended to help you set up...
9-3 74 4. l point) Caleulate the correlation coefficient r. This table is intended to help you set up the caleulation the correlation coefficient by hand. If you'd like to use your T1-34 instead go for it Column A:Colume B: The x deviations from The y deviations from the mean: (x,-x)the mean: -y B: Multiply the values in the Columas A and B. The product of the deviations. 3.5-7.65- 4.15 62-7.65 =-1.45 9.5-7.65-1.85 11.4-7.65 3.75 Sum the above rows for...