I am studying for an End of Course Test, and I am having trouble with this type of word problem with histograms and standard deviation. Unfortunately this was not covered in the textbook, and I can't find an example. The answer given for this question is B. Can someone please walk me through this? Thank you.
Histograms and Standard Deviation
- Thread starter asissa
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You have basic, fundamental formulations for calculating Mean and Standard Deviation. I do not believe these are not covered in your text.
There is only the problem of what values to use. In the [0,4] group, use 2.
Let's see what you get.
There is only the problem of what values to use. In the [0,4] group, use 2.
Let's see what you get.
I understand standard deviation, and I know that histograms show the frequency - I could not seem to find an example of how to marry the two together! I saw your hint (Thank you!), which I assume is the difference between the mean of the data and the data, and went on as follows:
The mean of both teams is 2 (team 1: 4+1+0+3+2=10/5=2 and team 2:1+2+4+2+1=10/5=2).
The difference between the mean and the data for team 1 would be (4-2=2, 1-2=1, 0-2=2, 1-2=1, 4-2=2 in absolute terms). Giving me a total of 8.
The difference between the mean and the data form team 2 would be (1-2=1, 2-2=0, 4-2=2, 2-2=0, 1-2=1 in absolute terms). Giving me a total of 4.
8 and 4 are the closest to answer B (team 1: 7.4 points, Team 2:4.4 points). Thank you - I was going nuts with this one. There were several more questions on histograms and using this process I am getting the right answers. I can't believe that was all there was to it!
The mean of both teams is 2 (team 1: 4+1+0+3+2=10/5=2 and team 2:1+2+4+2+1=10/5=2).
The difference between the mean and the data for team 1 would be (4-2=2, 1-2=1, 0-2=2, 1-2=1, 4-2=2 in absolute terms). Giving me a total of 8.
The difference between the mean and the data form team 2 would be (1-2=1, 2-2=0, 4-2=2, 2-2=0, 1-2=1 in absolute terms). Giving me a total of 4.
8 and 4 are the closest to answer B (team 1: 7.4 points, Team 2:4.4 points). Thank you - I was going nuts with this one. There were several more questions on histograms and using this process I am getting the right answers. I can't believe that was all there was to it!