Question
Consider the following set of data. (24, 11), (33, 45), (57, 26), (79, 18), (107, 58),...
Consider the following set of data.
(24, 11), (33, 45), (57, 26), (79, 18), (107, 58), (116,
6)
(a) Calculate the covariance of the set of data. (Give your answer
correct to two decimal places.)
(b) Calculate the standard deviation of the six x-values
and the standard deviation of the six y-values. (Give your
answers correct to three decimal places.)
| sx | = |
| sy | = |
(c) Calculate r, the coefficient of linear correlation,
for the data in part (a). (Give your answer correct to two decimal
places.)
Homework Answers
Answer #1
The table given below ,
| x | y | x^2 | y^2 | xy | |
| 24 | 11 | 576 | 121 | 264 | |
| 33 | 45 | 1089 | 2025 | 1485 | |
| 57 | 26 | 3249 | 676 | 1482 | |
| 79 | 18 | 6241 | 324 | 1422 | |
| 107 | 58 | 11449 | 3364 | 6206 | |
| 116 | 6 | 13456 | 36 | 696 | |
| Sum | 416 | 164 | 36060 | 6546 | 11555 |
(a) The covariance of the set of data is ,
(b)
(c)
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