I'm really bad at this. An explanation of how you know which one they are and stuff would help too.
-We tested 20 students, 10 in each group. Before starting the experiment, we measured heart rate and blood pressure of each student. Then we had 10 students do jumping jacks and 10 take a nap for 10 minutes. Then we took heart rate and blood pressure again.
2006-10-10 16:19:35 · 13 answers · asked by Kiko 3 in Science & Mathematics ➔ Biology
In an expirement, the independent variable is that which you have control over. It is the variable that you change to effect an outcome. The dependent variable is the one which you will observe for change.
In this expirement, it seems that you are looking at heart rate and blood pressure. These would be the dependent variables. The independent variables are the things you are having the students do to effect a change in the heart rate and blood pressured, i.e. jumping jacks and nap.
The easiest way to remember it is that the dependent variable depends on the conditions of the expirement, wich contain the independent vairables.
--Dee
2006-10-10 16:27:43 · answer #1 · answered by Deirdre H 7 · 3⤊ 0⤋
Identifying Independent And Dependent Variables
2016-10-03 02:00:41 · answer #2 · answered by ? 4 · 0⤊ 0⤋
The independent variable is "amount of exercise", which has two levels in this experiment 1. jumping jacks, 2. naps (no exercise). The dependent variable is the heart rate and blood pressure. This is a between-subjects design because each person did only one thing (i.e. you didn't measure all people both resting and exercising).
How do you know? the easy way is...the dependent variable is the thing you measure i.e. heart rate and blood pressure.
The independent variable is the thing you manipulate, i.e. the amount of exercise.
Hope this helps!
2006-10-10 16:29:39 · answer #3 · answered by RebeccaS 1 · 1⤊ 0⤋
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Can someone help me identify the dependent and independent variables in this experiment?
I'm really bad at this. An explanation of how you know which one they are and stuff would help too.
-We tested 20 students, 10 in each group. Before starting the experiment, we measured heart rate and blood pressure of each student. Then we had 10 students do jumping jacks and 10 take a...
2015-08-07 04:40:22 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The dependent variable is the variable you measure. In this case heart rate. The independent variable is the variable you manipulate, in this case rest/exercise.
2006-10-10 16:27:38 · answer #5 · answered by Mr Pink 2 · 0⤊ 0⤋
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Independent variable: color of the plates Dependent variable: Amount of leftover pizza Control: White plates
2016-04-11 00:38:55 · answer #6 · answered by ? 4 · 0⤊ 0⤋
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2016-05-21 11:49:10 · answer #7 · answered by ? 4 · 0⤊ 0⤋
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2014-08-11 06:48:46 · answer #8 · answered by Anonymous · 0⤊ 0⤋
independent variable=heart rate and blood pressure
dependent variable=rest
2006-10-10 16:23:32 · answer #9 · answered by whatsurproblem_ashis 1 · 0⤊ 1⤋
The only variables involved would be that the heart rate of the people excercising would be higher than the heart rate of those resting.
I think you need to post more information to get the answer you need.
2006-10-10 16:24:50 · answer #10 · answered by froggy010101 4 · 0⤊ 0⤋