Question

Identifying independent and dependent variables?

I am having trouble identifying the independent and dependent variables. I read a study that was conducted in order to determine the levels and patterns of physical activity of obese and nonobese children using accelerometers. This study will help researchers gain a better understanding the relationship of physical activity (frequency, intensity, and volume) and obesity. I know, BMI was also used in the study. Please help me identify what the independent and dependent variables are!!

Thanks!

Answer 1

Here is an example of an independent variable (t) time. Time doesn't depend on anything.

Answer 2

Lets draw a graph.

Answer 3

yeah I understand that, but I don't know if its the ages of the children, the physical activity, the accelerometer…. because basically the whole point of the experiment was measuring the physical activity of obese and non obese children from the ages of 9 to 11

Answer 4

no i really don't need a graph, I just don't understand which one is which

Answer 5

So the ages would be your independent variable and the physical activity would be the dependent variable.

Answer 6

okay, thank you

Answer 7

Do you know why though?

Answer 8

not really, I know dependent variables are the outcome and independent variables stay the same

Answer 9

As time goes by you get older, it's something you can't control. Therefore it's a independent variable. You can control your physical activity from day to day so you are depending on the time to "excersise."

Answer 10

I know, but the research is measuring the physical activity of young kids, but are comparing obese and nonobese kids by using accelerometers….. doesn't that have to do with anything….. like I'm not seeing how physical activity relates to age. it is suppose to see if obese children are less active then normal weighing children…. do you get me?