| Tag | Value |
|---|---|
| file | Inferential_Statistics_vufsw-t-statistic-1144-en_vufsw-t-statistic-1144-en |
| name | vufsw-t-statistic-1144-en |
| section | inferential statistics/nhst/test statistic/t-statistic |
| type | schoice |
| solution | FALSE, TRUE, FALSE, FALSE |
| Type | conceptual |
| Program | NA |
| Language | English |
| Level | statistical reasoning |
A researcher asks 160 randomly chosen people what the ideal group size (in number of persons) is to work as a team on an assignment. The respondents’ response is on average 6.3, with a standard deviation of 2.8. The researcher tests whether this average deviates significantly from a test average of 8.
Suppose that instead of 160 people, only 80 people would have participated in the study, and that the average (6.3) and standard deviation (2.8) would be the same. What does the decrease in the number of respondents mean for the calculated (observed) t-value?
The absolute t-value has become smaller.
t=mean-mean(test)/se and the se=S/ √n
If n becomes smaller than the se becomes higher, thus t becomes smaller.
If you want to know more about this t-test watch this clip
Language
Nederlands
Levels of Difficulty
Difficult
M&T BIS
Default value
M&T Hypothesis testing: means
Default value