| Tag | Value |
|---|---|
| file | Descriptive-statistics_uva-standard-deviation-428-en_uva-standard-deviation-428-en |
| name | uva-standard-deviation-428-en |
| section | Descriptive statistics/Summary Statistics/Measures of Spread/Standard Deviation |
| type | schoice |
| solution | FALSE, FALSE, TRUE, FALSE |
| Type | Calculation |
| Language | English |
| Level | Statistical Literacy |
| IRT-Difficulty | 4.202 |
| p-value | 0.0835 |
Given two independent stochastic variables X and Y with standard deviations 12 and 5, respectively. Now suppose that Z = X - Y. The s.d. of Z is then equal to