Question

In: Math

Consider the following three data sets which shows the students’ results for test in the new...

Consider the following three data sets which shows the students’ results for test in the

new course launched in the undergraduate program across three sections.

Class A:{65;75;73;50;60;64;69;62;67;85}

Class B:{85;79;57;39;45;71;67;87;91;49}

Class C: {43;51;53;110;50;48;87;69;68;91}

Using appropriate statistical tools- numerical and graphical, describe the similarity and differences in the students’ performance among the three classes.

Solutions

Expert Solution

CLASS A CLASS B CLASS C
1 65 85 43
2 75 79 51
3 73 57 53
4 50 39 110
5 60 45 50
6 64 71 48
7 69 67 87
8 62 87 69
9 67 91 68
10 85 49 91
TOTAL 670 670 670

SUMMARY STAISTICS FOR CLASS A

Column1
Mean 67
Standard Error 2.988868
Median 66
Mode #N/A
Standard Deviation 9.451631
Sample Variance 89.33333
Kurtosis 1.049154
Skewness 0.189496
Range 35
Minimum 50
Maximum 85
Sum 670
Count 10
Largest(1) 85
Smallest(1) 50
Confidence Level(95.0%) 6.76129

SUMMARY STAISTICS FOR CLASS B

Column1
Mean 67
Standard Error 5.917958
Median 69
Mode #N/A
Standard Deviation 18.71423
Sample Variance 350.2222
Kurtosis -1.52492
Skewness -0.21157
Range 52
Minimum 39
Maximum 91
Sum 670
Count 10
Largest(1) 91
Smallest(1) 39
Confidence Level(95.0%) 13.38735

SUMMARY STAISTICS FOR CLASS C

Column1
Mean 67
Standard Error 7.07735
Median 60.5
Mode #N/A
Standard Deviation 22.38055
Sample Variance 500.8889
Kurtosis -0.37231
Skewness 0.853689
Range 67
Minimum 43
Maximum 110
Sum 670
Count 10
Largest(1) 110
Smallest(1) 43
Confidence Level(95.0%) 16.01008

VARIANCE LESS IN CLASS A


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