statistical tests

Question 1

Test of difference, independant/unrelated, nominal

Answer 1

Chi-squared

Question 2

test of difference, independant/unrelated, ordinal

Answer 2

Mann-Whitney

Question 3

Test of difference, independant/unrelated, interval

Answer 3

Unrelated t-test

Question 4

test of difference, repeated/related, nominal

Answer 4

sign test

Question 5

test of difference, repeated/related, ordinal

Answer 5

wilcoxon

Question 6

test of difference, repeated/related, interval

Answer 6

Related t-test

Question 7

test of correlation, nominal

Answer 7

Chi-squared

Question 8

Test of correlation, Ordinal

Answer 8

Spearmans rho

Question 9

Test of correlation, interval

Answer 9

Pearsons r

Question 10

significance definition

Answer 10

A statistical term which indicates whether the null hypothesis can be rejected or not

Question 11

type 1 error

Answer 11

false positive

Question 12

type 2 error

Answer 12

false negative

Question 13

descriptive statistics

Answer 13

summarise/description data and include measures of central tenancy and measures of dispersion

Question 14

Infarential statistics

Answer 14

allow inferences to be made from data and enables the significance of a result to be determined

Question 15

nominal data

Answer 15

category data (showing a preference)

Question 17

ordinal data

Answer 17

data that is in an order eg rating

Question 18

interval data

Answer 18

measurements on a scale of fixed units

Question 19

parametric tests

Answer 19

more powerful and robust tests

Question 20

non-parametric tests

Answer 20

less powerful

Question 21

For parametric tests there are 3 conditions:

Answer 21

interval data, normal distribution and homogenicy of varients

Question 22

degree of freedom for related t test

Answer 22

Na + Nb - 2

Question 23

degree of freedom for unrelated t-test

Answer 23

Na - 1