(a) Mean of X =
Mean of Y =
Standard Deviation of X =
Standard Deviation of Y =
(b) The corrlation Coefficient =
We have the followign table:
X | Y | XY | X2 | Y2 | |
129 | 45 | 5805 | 16641 | 2025 | |
104 | 62 | 6448 | 10816 | 3844 | |
88 | 30 | 2640 | 7744 | 900 | |
69 | 35 | 2415 | 4761 | 1225 | |
SUM | 390 | 172 | 17308 | 39962 | 7994 |
correlation coefficient =
The table shows the total 4-year cost (in thousands of dollars) and the Graduation rate (nearest...
College Graduation Rates. Data from the College Results Online website compared the 2011 graduation rate and median SAT score for 92 similar-sized public universities and colleges in the United States. The scatterplot below shows the relationship between these two variables along with the least squares fit. Round all calculated results to 4 decimal places. 1. The relationship between median SAT score and graduation rate is , , and . 2. The explanatory variable is and the response variable is ....