Question 1117654
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.


<a href = "https://statistics.laerd.com/statistical-guides/types-of-variable.php" target = "_blank">https://statistics.laerd.com/statistical-guides/types-of-variable.php</a>