Flashcards in Inferential Testing Deck (17):

1

## What are the parametric tests?

###
Pearsons r

Related T test

Unrelated T test

2

## What are the Non-parametric tests?

###
Chi squared

Spearmans rho

Mann Whitney U

Wilcoxon

3

## Why are parametric tests favoured to Non-parametric tests?

### They are more likely to detect an effect of the IV compared to non-parametric tests

4

## What at the assumptions/criteria that needs to be met to use Parametric tests?

###
Data type

-Must use equal interval or ratio data

Normal disruption

-Data will be normally disrupted

Homogeneity of variance

-The samples of data will have roughly equal variance (the range/dispersion of data)

5

## What do you need to consider when looking at the homogeneity of variance?

###
The experimental design

-whether the groups are independent or repeated

>this will affect the standard deviation of results as the results will vary depending on the groups of independent measures.

6

## What is the difference between a parametric test and a Non-parametric tests?

### a parametric statistical test is one that makes assumptions about the parameters (defining properties) of the population distribution(s) from which one's data are drawn, while a non-parametric test is one that makes no such assumptions.

7

## What are the 3 D’s

###
Difference - what type of study (experiment = difference) (non-experiment = correlational)

Design -what experimental design was used

Data - what level of measurement what used?

8

## How do you work out if you can use a parametric test?

###
Look at what level of measurement is being used

(Nominal and ordinal cannot be used in parametric testing)

9

## If you can use a parametric test and the data is correlation, what test should you use?

### Pearsons r

10

## If you can use a parametric test, the results are non-correlational and you use independent groups, what test should you use?

### Unrelated T test

11

## If you can use a parametric test, the data’s non-correlational and you do not use independent groups then what test should you use?

### Related T test

12

## If you cannot use a parametric test, the data is nominal and you use a independent groups design, what test should you use?

### Chi-squared

13

## If you cannot use a parametric test, the data is nominal and you do not use a independent groups design, what test should you use?

### Sign test

14

## If you cannot use a parametric test, the data is not nominal and the data is correlational, what test should you use?

### Spearmans rho

15

## If you cannot use a parametric test, the data is not nominal, the data is not correlational and you use an independent group design, what test should you use?

### Mann-Whitney

16

## If you cannot use a parametric test, the data is not nominal, the data is not correlational and you do not use an independent group design, what test should you use?

### Wilcoxon

17