In: Math
Part I: Between-Groups Design
In the between-groups design, researchers were interested in whether cholesterol levels would differ depending on diet. Twenty participants were randomly assigned to one of two different groups. Group A was assigned a diet rich in fruits and vegetables and with no trans fats. Group B participants were asked to follow their normal diets, which contained varying levels of trans fats depending on the individual. After one month, blood samples were drawn and the following levels of cholesterol were obtained:
Participant |
Blood Cholesterol |
Diet |
1 |
129 |
Healthy |
2 |
98 |
Healthy |
3 |
150 |
Healthy |
4 |
75 |
Healthy |
5 |
135 |
Healthy |
6 |
175 |
Healthy |
7 |
115 |
Healthy |
8 |
103 |
Healthy |
9 |
156 |
Healthy |
10 |
143 |
Healthy |
11 |
239 |
Normal |
12 |
500 |
Normal |
13 |
350 |
Normal |
14 |
468 |
Normal |
15 |
198 |
Normal |
16 |
213 |
Normal |
17 |
225 |
Normal |
18 |
175 |
Normal |
19 |
560 |
Normal |
20 |
289 |
Normal |
In 2 to 3 sentences in a Microsoft Word document, answer the following questions:
Part II: Within-Subjects Design
In the within-subjects design, researchers were interested in whether participants could lower their cholesterol levels by changing from a diet higher in trans fats to one with no trans fats. Ten research participants were selected. A baseline measure of cholesterol was taken from each. They were then put on a diet rich in fruits and vegetables and devoid of trans fats for one month. At the end of that month, blood cholesterol was again measured and the following results were obtained:
Participant |
Blood Cholesterol |
Diet |
1 |
129 |
Baseline |
1 |
98 |
Healthy |
2 |
150 |
Baseline |
2 |
75 |
Healthy |
3 |
175 |
Baseline |
3 |
135 |
Healthy |
4 |
115 |
Baseline |
4 |
103 |
Healthy |
5 |
156 |
Baseline |
5 |
143 |
Healthy |
6 |
500 |
Baseline |
6 |
450 |
Healthy |
7 |
468 |
Baseline |
7 |
350 |
Healthy |
8 |
198 |
Baseline |
8 |
213 |
Healthy |
9 |
225 |
Baseline |
9 |
175 |
Healthy |
10 |
560 |
Baseline |
10 |
481 |
Healthy |
In 2 to 3 sentences in a Microsoft Word document, answer the
following questions:
Part I: Between-Groups Design
Here the researchers were interested in studying cholesterol levels which would depend on diet and hence here we can say that the independent variable is BLOOD CHOLESTEROL and the independent variable is DIET and the DIET has two levels NORMAL and HEALTHY
Part II: Within-Subjects Design
Here the researchers were interested in whether participants could lower their cholesterol levels by changing from a diet higher in trans fats to one with no trans fats
we can say that the independent variable is BLOOD CHOLESTEROL and the independent variable is DIET and the DIET has two levels BASELINE and HEALTHY
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