Question
Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5
Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI counts and IQ scores. The data is reported to the right.
Critical Values for Correlation Coefficient
n | |
---|---|
3 | 0.997 |
4 | 0.950 |
5 | 0.878 |
6 | 0.811 |
7 | 0.754 |
8 | 0.707 |
9 | 0.666 |
10 | 0.632 |
11 | 0.602 |
12 | 0.576 |
13 | 0.553 |
14 | 0.532 |
15 | 0.514 |
16 | 0.497 |
17 | 0.482 |
18 | 0.468 |
19 | 0.456 |
20 | 0.444 |
21 | 0.433 |
22 | 0.423 |
23 | 0.413 |
24 | 0.404 |
25 | 0.396 |
26 | 0.388 |
27 | 0.381 |
28 | 0.374 |
29 | 0.367 |
30 | 0.361 |
Females | Males | |||
---|---|---|---|---|
MRI | IQ | MRI | IQ | |
833,868 | 132 | 1,001,121 | 140 | |
856,472 | 140 | 1,079,550 | 141 | |
852,244 | 132 | 924,059 | 135 | |
866,662 | 130 | 955,003 | 139 | |
857,782 | 133 | 949,589 | 144 |
Compute the linear correlation coefficient between MRI count and IQ for females. Compute the linear correlation coefficient between MRI count and IQ for males.
The linear correlation coefficient for females is ____
The linear correlation coefficient for males is _____
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