Variance given Frequency Table
Presentation
•
Mathematics
•
8th - 12th Grade
•
Hard
Donald Mori
FREE Resource
5 Slides • 0 Questions
1
Sometimes we are given a frequency table instead of a long list of repeated values and are asked to find the variance of the data set.
2
Variance of Frequency Distributions
Suppose x1, x2 , . . . , xm have respective frequencies f1 , f2 , . . . , fm , then
3
Given the frequency table, find the variance.
x | f |
|---|---|
1 | 10 |
4 | 20 |
7 | 30 |
10 | 40 |
4
5
x | f |
|---|---|
10 | 4 |
14 | 6 |
18 | 8 |
22 | 2 |
Given the frequency table, find the variance.
Sometimes we are given a frequency table instead of a long list of repeated values and are asked to find the variance of the data set.
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