Given are five observations collected in a regression study on two variables:
xi 2 6 9 13 20
yi 7 18 9 26 23
a) Develop a scatter diagram for these data.
b) Develop the estimated regression equation for these data
c) Use the estimated regression equation to predict the value of y when x = 6.
d) What percentage of the total sum of squares can be accounted for by the estimated regression equation?
e) What is the sample correlation coefficient?
f) What is the value of the standard error of the estimate?
g) Test for a significant relationship by using the t test. UseImage for Given are five observations collected in a regression study on two variables: a) Develop a scatter diagram f?=.05.
