Question
The following data gives the number of hours 7 students spent studying and their corresponding grades...
The following data gives the number of hours 7 students spent studying and their corresponding grades on their midterm exams.
| Hours Spent Studying | 0.5 | 1 | 1.5 | 2.5 | 3.5 | 4 | 4.5 |
|---|---|---|---|---|---|---|---|
| Midterm Grades | 69 | 72 | 75 | 81 | 84 | 90 | 96 |
Copy Data
Step 1 of 3 :
Calculate the correlation coefficient, r. Round your answer to six decimal places.
Homework Answers
Answer #1
| Hours Spent Studying (x) | Midterm Grades (y) | x2 | y2 | xy |
| 0.5 | 69 | 0.25 | 4761 | 34.5 |
| 1 | 72 | 1 | 5184 | 72 |
| 1.5 | 75 | 2.25 | 5625 | 112.5 |
| 2.5 | 81 | 6.25 | 6561 | 202.5 |
| 3.5 | 84 | 12.25 | 7056 | 294 |
| 4 | 90 | 16 | 8100 | 360 |
| 4.5 | 96 | 20.25 | 9216 | 432 |
| 17.5 | 567 | 58.25 | 46503 | 1507.5 |
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The following data gives the number of hours 10 students spent studying and their corresponding grades...
The following data gives the number of hours 10 students spent
studying and their corresponding grades on their exams.
Hours Spent Studying
0
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Copy Data
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The following data gives the number of hours 77 students spent studying and their corresponding grades...
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The following data gives the number of hours 10 students spent studying and their corresponding grades...
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Answer
How to enter your answer
Tables Keypad
The following data gives the number of hours 7 students spent studying and their corresponding grades...
The following data gives the number of hours 7 students spent
studying and their corresponding grades on their midterm exams.
Hours Spent Studying (x) 0.5 1 2.5 3 4 5 5.5
Midterm Grades (y) 66 69 75 78 90 93 96
Determine the correlation between hours spent studying and
midterm grades.
a) positive correlation b) negative correlation c) no
correlation
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