| Tag | Value |
|---|---|
| file | Descriptive-statistics_uva-standard-deviation-570-en_uva-standard-deviation-570-en |
| name | uva-standard-deviation-570-en |
| section | Descriptive statistics/Summary Statistics/Measures of Spread/Standard Deviation |
| type | schoice |
| solution | FALSE, TRUE, FALSE, FALSE |
| Type | Calculation |
| Language | English |
| Level | Statistical Literacy |
| IRT-Difficulty | 4.451 |
| p-value | 0.0237 |
A pre- and post-measurement was done on five individuals:
—— —- —- —- —- —- Before 14 12 20 18 18 After 18 17 28 21 23 —— —- —- —- —- —-
The standard deviation of the differences is equal to: