In each of the two introductory statistics sections, 10 random students were asked how many hours, on average, they study prior test. Here are their responses: What is the variance and standard deviation in both samples CLASS A Student 1: 1 hour Student 2: 4 hours Student 3: 3 hours Student 4: 0 hours Student 5: 2 hours Student 6: 12 hours Student 7: 1 hour Student 8: 2 hours Student 9: 2 hours Student 10: 3 hours CLASS B Student 1: 2 hours Student 2: 2 hours Student 3: 2 hours Student 4: 4 hoursStudent 5: 4 hoursStudent 6: 3 hours Student 7: 2hours Student 8: 2 hours Student 9: 4 hours Student 10: 3 hours
In each of the two introductory statistics sections, 10 random students were asked how many hours, on average, they study prior test. Here are their responses:
What is the variance and standard deviation in both samples
CLASS A
Student 1: 1 hour
Student 2: 4 hours
Student 3: 3 hours
Student 4: 0 hours
Student 5: 2 hours
Student 6: 12 hours
Student 7: 1 hour
Student 8: 2 hours
Student 9: 2 hours
Student 10: 3 hours
CLASS B
Student 1: 2 hours
Student 2: 2 hours
Student 3: 2 hours
Student 4: 4 hours
Student 5: 4 hours
Student 6: 3 hours
Student 7: 2hours
Student 8: 2 hours
Student 9: 4 hours
Student 10: 3 hours
In this context, value corresponding to student 6 is different from other values. Here, it is considered as 12 hours.
Mean:
The mean of the class A is:
The variance for the Class A is:
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