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Flashcards in Stats Deck (11)
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1

Quadratic curve equation

Y= cx2 + bx + a

2

Parametric stats have to be what

N= >30
Normally distributed
Interval or ratio scale

3

Non parametric stats have to be ...

N = <30
Nominal or ordinal
Or interval and ration data that isn’t normally distributed

4

Interval data definition

Data with no absolute zero point eg degrees Celsius, based on numerical scale, equal size

5

Ratio data definition

Absolute zero such as %

6

Nominal data definition

Data put in categories, no order

7

Ordinal data definition

Data put in order, subjective rankings eg asking someone to rank how much they like something in 1-10

8

Parametric tests to use when you’re testing difference

T test (1 sample and 2 sample)
Analysis of variance (ANOVA)

9

Parametric test to test relationship

Pearsons correlation (explanatory data, allows you to predict another variable)

10

Non parametric tests to test difference

Chi squared
Mann Whitney test
Kruskal Wallis test

11

Non parametric test to test relationship

Spearmans rank correlation