Question 117728: Please answer this question.
1) The following are the first Quiz scores from a previous class:
9.5, 7.5, 9.5, 7, 10, 7.5, 6.5, 1.5, 8, 10
A. Is this data discrete or continuous and why?
B. Develop a frequency distribution showing all frequencies, cumulative frequencies, and relative frequencies.
C. Calculate the Variance and Standard Deviation and describe what they tell you in the context of this problem.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 1) The following are the first Quiz scores from a previous class:
9.5, 7.5, 9.5, 7, 10, 7.5, 6.5, 1.5, 8, 10
A. Is this data discrete or continuous and why?
This set is discrete because there are values in the range
0 to 10 that are not present.
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B. Develop a frequency distribution showing all frequencies, cumulative frequencies, and relative frequencies.
Can't do that on this site but I ran the data on a TI calculator and
got the following frequency distribution:
000--3.625..........1
3.625-3.625.........0
3.625-7.875.........4
7.875-10............3
10-12.125...........2
==========================
Cumulative frequencies are: 1,1,5,8,10
Relative frequencies are: 10%,0%,40%,30%,20%
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.. Calculate the Variance and Standard Deviation and describe what they tell you in the context of this problem.
Variance = 2.4^2
Standard Deviation = 2.4
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Cheers,
Stan H.
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