Revision questions Flashcards
Bonferroni’s method of pair-wise comparisons is a…?
Very strict post-hoc test.
An ANOVA for a between-groups design works by dividing the…?
Variance between groups by the variance within groups - effect/error.
The Kruskal-Wallis test is the non-parametric equivalent of the…?
ANOVA
The table showing the category frequencies for Chi-square is called:
A contingency table.
What form of graph should be used to demonstrate that Group A have greater mean RTs than Group B?
An errorbar plot.
If the two-tailed significance of a test is 0.054, what is the one-tailed significance?
0.027
A z-transformed score of 1.9 is close to what percentile?
97.5%
How does covariance differ to correlation?
It depends on the overall variability of the sample.
What family of tests is the ANOVA part of?
GLM
The Friedman test is the non-parametric equivalent of the…?
Repeated-measures ANOVA.
What information are t-tests based on?
The size of the difference between conditions normalised by the SEM.
How did inferential statistics get their name?
Because we use them to infer things about a population from the sample.
In what way is the concept of statistical significance useful?
It tells us how important our effect was.
Is variance between conditions a source of noise we need to minimise?
No
The median is always expressed with the same units as the original data values, is the same as one of the original data values, and is more…?
Variable than the original data values.
