| Tag | Value |
|---|---|
| file | Descriptive-statistics_uva-standard-deviation-585-en_uva-standard-deviation-585-en |
| name | uva-standard-deviation-585-en |
| section | Descriptive statistics/Summary Statistics/Measures of Spread/Standard Deviation |
| type | schoice |
| solution | FALSE, FALSE, FALSE, TRUE |
| Type | Conceptual |
| Language | English |
| Level | Statistical Literacy |
| IRT-Difficulty | 4.385 |
| p-value | 0.0325 |
Given two independent stochastic variables x ( with mean 30 and sd 4) and y (with mean 50 and sd 6). z = 2x - y. Mean and standard deviation of z are then respectively.