Year | X | Y |
1 | 12.00% | 25.00% |
2 | 28.00% | 34.00% |
3 | 9.00% | 13.00% |
4 | -7.00% | -27.00% |
5 | 10.00% | 14.00% |
Average= | 10.40% | 11.80% |
Standard dev= | 12.42% | 23.34% |
Variance= | 0.01543 | 0.05447 |
Where | |||||||
Average or Mean = Sum of all observations/Count of all observations | |||||||
Sample Standard deviation =((∑k=1 to N (observationk – average))/(N-1))^(1/2) | |||||||
Variance = standard deviation^2 |
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Please work this out the long way so I can see each step. I need
to know how to do this for an exam, not excel.
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