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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