For the test conducted in Question 18, compute r2 to measure the size of any effect. Indicate whether the effect size are small, medium, or large.
The following data was collected from a clinical trial testing a new drug aimed to lower blood pressure for individuals older than age 45. Half of the 20 participants received the new drug (Treatment = Yes) and the other half of the participants received a placebo pill (Treatment = No). Their age and gender was also recorded. Please use this data for Questions 17-19 and 20-24 and note, not all the information in the table will be used for either problem, you must decide what is relevant based on what the problem is asking.
|
Subject ID |
Treatment |
Age |
Gender |
BP_Before |
BP_After |
|
D1 |
Yes |
65 |
F |
103.3 |
80.5 |
|
D2 |
Yes |
59 |
F |
93.6 |
85.9 |
|
D3 |
Yes |
60 |
M |
92 |
85.2 |
|
D4 |
Yes |
54 |
F |
93 |
87.8 |
|
D5 |
Yes |
65 |
F |
95.4 |
85.3 |
|
D6 |
Yes |
57 |
M |
109.6 |
94.2 |
|
D7 |
Yes |
69 |
M |
97.9 |
83.9 |
|
D8 |
Yes |
62 |
M |
96 |
85 |
|
D9 |
Yes |
49 |
F |
98.4 |
86.3 |
|
D10 |
Yes |
45 |
M |
98.4 |
90 |
|
C1 |
No |
63 |
F |
97.4 |
93.1 |
|
C2 |
No |
56 |
F |
97.2 |
92.4 |
|
C3 |
No |
54 |
M |
98.8 |
94.6 |
|
C4 |
No |
69 |
M |
98.4 |
92.3 |
|
C5 |
No |
75 |
M |
89.8 |
89.3 |
|
C6 |
No |
62 |
F |
103.4 |
99.7 |
|
C7 |
No |
61 |
F |
90.1 |
88.4 |
|
C8 |
No |
59 |
M |
93.7 |
90.4 |
|
C9 |
No |
73 |
M |
96.4 |
91.1 |
|
C10 |
No |
57 |
F |
98.6 |
90.5 |
For the test conducted in Question 18, compute r2 to measure the size of any effect. Indicate whether the effect size are small, medium, or large.
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