Question: A researcher is interested in determining whether a relationship exists between sleep and quality of life. The researcher randomly invites students at Drexel University to
A researcher is interested in determining whether a relationship exists between sleep and quality of life. The researcher randomly invites students at Drexel University to participate in a study, which asks students to selfreport the number of hours per night they slept (on average) over the past 30 days. The students are then complete the Short-Form (36) Health Survey, a 36item survey assessing both physical and mental composite scores for quality of life. Using the Excel and JASP datasets provided, please answer the following questions when performing the bivariate correlation
- Calculate the cross-products for each participant in the dataset and then sum and average (covariance) the cross products
- Calculate the Pearson's Product Moment Correlation Coefficient (r) for the data.
- Using the r distribution table, determine the r critical value and compare it to the obtained r value. Does the r-obtained value exceed the r critical value? If so, what does this mean? If not, what does this mean.
- Write the statistical finding and conclusion statements
| participant_id | hrs_sleep | sf_36 |
| 1 | 5 | 74 |
| 2 | 10 | 57 |
| 3 | 3 | 43 |
| 4 | 1 | 49 |
| 5 | 3 | 85 |
| 6 | 5 | 26 |
| 7 | 7 | 41 |
| 8 | 2 | 80 |
| 9 | 1 | 30 |
| 10 | 9 | 72 |
| 11 | 9 | 37 |
| 12 | 10 | 82 |
| 13 | 1 | 39 |
| 14 | 4 | 92 |
| 15 | 6 | 56 |
| 16 | 7 | 54 |
| 17 | 1 | 94 |
| 18 | 8 | 87 |
| 19 | 2 | 69 |
| 20 | 6 | 87 |
| 21 | 4 | 63 |
| 22 | 4 | 78 |
| 23 | 6 | 99 |
| 24 | 1 | 78 |
| 25 | 5 | 47 |
| 26 | 10 | 39 |
| 27 | 10 | 54 |
| 28 | 3 | 90 |
| 29 | 10 | 68 |
| 30 | 6 | 33 |
| 31 | 2 | 55 |
| 32 | 9 | 56 |
| 33 | 1 | 34 |
| 34 | 10 | 83 |
| 35 | 5 | 89 |
| 36 | 5 | 96 |
| 37 | 8 | 43 |
| 38 | 7 | 48 |
| 39 | 5 | 27 |
| 40 | 3 | 29 |
| 41 | 1 | 68 |
| 42 | 1 | 67 |
| 43 | 5 | 50 |
| 44 | 9 | 50 |
| 45 | 8 | 51 |
| 46 | 2 | 93 |
| 47 | 5 | 38 |
| 48 | 8 | 65 |
| 49 | 1 | 85 |
| 50 | 1 | 42 |
| 51 | 3 | 43 |
| 52 | 5 | 93 |
| 53 | 9 | 62 |
| 54 | 9 | 26 |
| 55 | 2 | 28 |
| 56 | 8 | 49 |
| 57 | 1 | 67 |
| 58 | 6 | 96 |
| 59 | 5 | 65 |
| 60 | 9 | 92 |
| 61 | 3 | 38 |
| 62 | 5 | 67 |
| 63 | 3 | 60 |
| 64 | 4 | 86 |
| 65 | 6 | 39 |
| 66 | 2 | 66 |
| 67 | 9 | 31 |
| 68 | 3 | 84 |
| 69 | 5 | 85 |
| 70 | 2 | 73 |
| 71 | 5 | 41 |
| 72 | 10 | 75 |
| 73 | 2 | 80 |
| 74 | 4 | 57 |
| 75 | 4 | 56 |
| 76 | 9 | 67 |
| 77 | 10 | 29 |
| 78 | 4 | 86 |
| 79 | 5 | 93 |
| 80 | 9 | 63 |
| 81 | 1 | 34 |
| 82 | 9 | 25 |
| 83 | 2 | 56 |
| 84 | 8 | 55 |
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