| Tag | Value |
|---|---|
| file | Descriptive-statistics_uva-standard-deviation-418-en_uva-standard-deviation-418-en |
| name | uva-standard-deviation-418-en |
| section | Descriptive statistics/Summary Statistics/Measures of Spread/Standard Deviation |
| type | schoice |
| solution | FALSE, FALSE, FALSE, TRUE |
| Type | Calculation |
| Language | English |
| Level | Statistical Literacy |
| IRT-Difficulty | 4.316 |
| p-value | 0.066 |
Suppose y is a stochastic variable that indicates my winnings at a certain casino game with a bet of 25 guilders. The expectation of y is -2 and the standard deviation is 6. Now I play the game 4 times. The standard deviation of the variable indicating my profit over the 4 games together is then equal to