2. Below are two columns of numbers: values of x and y for five observations. The next three columns have been left blan
Posted: Thu May 12, 2022 3:46 pm
2. Below are two columns of numbers: values of x and y for five
observations. The next three columns have been left blank for you
to fill in. The variable x has a mean of 3.0 and a standard
deviation equal to 1.6. The variable y has a mean of 11.6 and a
standard deviation of 5.0. In this exercise you will hand-calculate
the Pearson’s correlation coefficient, R2, and adjusted R2 for the
relationship between x and y. x y Z Score of x Z Score of y Z Score
of x × Z Score of y 1 18 2 13 3 14 4 7 5 6 A.
A. Calculate and write in the appropriate values in each
column.
B. Show your calculation of Pearson’s r for the
relationship.
C. Calculate R2 for this relationship.
D. Showing your work, calculate adjusted R2 for this
relationship.
observations. The next three columns have been left blank for you
to fill in. The variable x has a mean of 3.0 and a standard
deviation equal to 1.6. The variable y has a mean of 11.6 and a
standard deviation of 5.0. In this exercise you will hand-calculate
the Pearson’s correlation coefficient, R2, and adjusted R2 for the
relationship between x and y. x y Z Score of x Z Score of y Z Score
of x × Z Score of y 1 18 2 13 3 14 4 7 5 6 A.
A. Calculate and write in the appropriate values in each
column.
B. Show your calculation of Pearson’s r for the
relationship.
C. Calculate R2 for this relationship.
D. Showing your work, calculate adjusted R2 for this
relationship.