stats tests

Question 1

when is a chi squared test used

Answer 1

test of correlation
nominal data

Question 2

when is a sign test used

Answer 2

related design test of difference nominal data

Question 3

when is a mann whitney U test used

Answer 3

testing for a difference unrelated design and ordinal data

Question 4

when is a wilcoxon T test used

Answer 4

test for difference related design ordinal data

Question 5

when is a spearmans rho test used

Answer 5

test of correlation
ordinal data

Question 6

when is an unrelated T test used

Answer 6

test of difference, unrelated design, interval data

Question 7

when is a related t test used

Answer 7

test of difference, related design, interval data.

Question 8

when is pearsons r used

Answer 8

test of correlation only
interval data

Question 9

define nominal data

Answer 9

categorical into distinct groups

Question 10

define ordinal data

Answer 10

data that is organised into scale or rank order rg finishing order of runners in a race or ranking feeling scale 1-7

Question 11

define interval data

Answer 11

difference between two points on a scale is meaningful and consistent such as temperature
tests associated with interval data are pearsons r, related t test and unrelated t test

Question 12

what tests test for a coRrelation (parametric test)

Answer 12

pearsons R tests
chi squaRed
spearmans Rho