Below is data for two variables, X and Y. Answer the questions that follow. X Y...
Below is data for two variables, X and Y. Answer the questions that follow.
| X | Y | X-MX | Y-MY | (X-MX)2 | (Y-MY)2 | (X-MX)(Y-MY) |
| 0 | 4 | -3 | -1 | 9 | 1 | 3 |
| 2 | 3 | -1 | -2 | 1 | 4 | ___ |
| 4 | 7 | 1 | ___ | 1 | 4 | 2 |
| 6 | 6 | 3 | 1 | ___ | 1 | 3 |
MX = _____; MY = _____
MX = 5; MY = 4
MX = 3; MY = 5
MX = 4; MY = 4
MX = 12; MY = 20
What is the missing value under the Y-MY column?
4
-2
2
3
What is the missing value under the (X-MX)2 column?
3
-3
5
9
What is the missing value under the (X-MX)(Y-MY) column? (far right column)
-3
2
-2
3
SSX = _____; SSY = _____
SSX = 10; SSY = 10
SSX = 10; SSY = 20
SSX = 100; SSY = 400
SSX = 20; SSY = 10
SP = ____
20
100
12
10
r = ____
-.71
+.85
-.85
+.71
Positive or negative correlation?
Negative
Positive
Homework Answers
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Below is data for two variables, X and Y. Answer the
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