Statistical tests

Question 1

Statistically significant difference/relationship

Answer 1

unlikely to have occurred by chance, researchers reject null, retain alt hypothesis

Question 2

Parametric tests

Answer 2

used when data is normally distributed

Question 3

Non-parametric tests

Answer 3

used when data is not normally distibuted

Question 4

Sign test

Answer 4

. Non-parametric
. Inferences
. Related (repeated)
. Numeric nominal (categoric)
. Examines direction of difference between pairs of scores

Question 5

Mann-Whitney U test

Answer 5

. Non para
. Sig of difference between 2 conditions
. Independent
. Ordinal

Question 6

Unrelated T test

Answer 6

. Para
. Sig of difference between 2 conditions
. Independent
. Normally distributed

Question 7

Wilcoxon matched pairs signed ranks test

Answer 7

. Non parametric
. Sig of difference between 2 conditions
. Repeated
. Ordinal

Question 8

Related T test

Answer 8

. Para
. Sig of difference between 2 conditions
. Repeated
. Ordinal
. Normally distributed

Question 9

Spearman’s Rho (Rank Order) correlation coeffecient

Answer 9

. Correlation between 2 IVs analysed
. Non para
. Calc correlation coefficient between ranked scores
. Ordinal data

Question 10

Pearson’s R correlation coefficient

Answer 10

. Correlation between 2 IVs analysed
. Para
. Calc correlation coefficient between actual scores
. Ordinal

Question 11

Chi-square test

Answer 11

. Test of sig of association
. Nominal (freq)

Question 12

carrots should come mixed with suede under roast potatoes

Answer 12

chi square, sign test, chi square, mann whitney u test, wilcoxon matched pairs sign ranks, spearman rho correlation coefficient, unrelated t test, related t test, pearsons r correlation coefficient