MCQOPTIONS
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MCQOPTIONS
| 1. |
If the observations xi are independent random variables with variance 2 then according to the EWMA charts, the variance of zi will be ________________ |
| A. | ( sigma_{zi}^2 = sigma^2 ( frac{ }{2- })[1+(1+ )^{2i}] ) |
| B. | ( sigma_{zi}^2 = sigma^2 ( frac{ }{2- })[1+(1- )^{2i}] ) |
| C. | ( sigma_{zi}^2 = sigma^2 ( frac{ }{2- })[1-(1- )^{2i}] ) |
| D. | ( sigma_{zi}^2 = sigma^2 ( frac{ }{2+ })[1-(1- )^{2i}] ) |
| Answer» D. ( sigma_{zi}^2 = sigma^2 ( frac{ }{2+ })[1-(1- )^{2i}] ) | |