Question
The accompanying data show the number of hours, x, studied for and the grade received, y...
The accompanying data show the number of hours, x, studied for and the grade received, y (y is measured in tens; that is, y = 8 means that the grade, rounded to the nearest 10 points, is 80).
| x | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 |
| y | 5 | 5 | 6 | 5 | 7 | 7 | 8 | 6 | 9 | 8 | 7 | 9 | 10 | 8 | 9 |
(a) Use the given scatter diagram to estimate r for the
sample data on the number of hours studied and the grade.
r ≈
(b) Calculate r. (Give your answer correct to two decimal
places.)
r =
Homework Answers
Answer #1
a)
b)
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