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Mathematics
9th -
Professional Development
Mean, Variance, and SD of a Grouped Freq Dist
10 questions
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- 1. Multiple Choice
What is the class width of the given GROUPED Freq. Dist.
9
10
8
None of the above
- 2. Multiple Choice
What does "n" represent?
Total Frequency
width
midpoint
mean
- 3. Multiple Choice
For the given Grouped Freq. Dist. Find the Midpoints
4, 14, 24, 34, 44
5, 15, 25, 35, 45
4.5, 14.5, 24.5, 34.5, 44.5
None of the above
- 4. Multiple Choice
What is the n for the given GROUPED freq. distribution
60
122.5
120
63
- 5. Multiple Choice
What are the values of each of rows for (Xm*f)?
72, 252, 216, 306, 396
81, 261, 220.5, 310.5, 400.5
None of the above
- 6. Multiple Choice
FInd the Mean of the given data
20.2
20.7
14.1
13.99
- 7. Multiple Choice
Given the data find the POPULATION standard Deviation by Calculator.
14.1
20.2
14.0
13
- 8. Multiple Choice
For the following data find the SAMPLE standard Deviation by Calculator
20.2
13
14.1
13.99
- 9. Multiple Choice
For the following data find the POPULATION VARIANCE by calculator
199.078341
195.9183673
14.1
13.99
- 10. Multiple Choice
For the following data find the SAMPLE VARIANCE using the calculator
199.078341
195.9183673
14.1
13.99
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