Question
Find variance of observations $11, 20, 29, 38, 52.$
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| Year | Attribute $A$ | Attribute $B$ | Total | ||||||
| Sub – data $1$ |
Sub –data $2$ |
Total | Sub – data $1$ |
Sub –data $2$ |
Total | Sub – data $1$ |
Sub –data $2$ |
Total | |
| $2014$ | $200$ | $300$ | $100$ | $200$ | |||||
| $2015$ | $400$ | $150$ | $3000$ | $300$ | |||||