Question 1117654: Please help me with this im so confused...
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 sentence answer the following questions:
What is the independent variable in this study?
What are the levels of that independent variable?
What is the dependent variable?
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! the independent variable is the diet.
that's what you are manipulating in order to observe the effect.
the dependent variable is the level of cholesterol.
the levels of the independent variable would be the type of diet.
it will be either healthy or normal.
one group gets the healthy diet.
the other group gets the normal diet.
presumably their cholesterol levels are measured before the test starts, although this doesn't appear to be stipulated.
it would, however, be desired, since it is entirely possible that the groups have different cholesterol levels to start with and that would definitely be a factor affecting the result.
here's a reference on dependent and independent variables that might help explain what each one is.
https://statistics.laerd.com/statistical-guides/types-of-variable.php
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