Stats Flashcards

1
Q

Quadratic curve equation

A

Y= cx2 + bx + a

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2
Q

Parametric stats have to be what

A

N= >30
Normally distributed
Interval or ratio scale

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3
Q

Non parametric stats have to be …

A

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

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4
Q

Interval data definition

A

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

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5
Q

Ratio data definition

A

Absolute zero such as %

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6
Q

Nominal data definition

A

Data put in categories, no order

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7
Q

Ordinal data definition

A

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

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8
Q

Parametric tests to use when you’re testing difference

A
T test (1 sample and 2 sample) 
Analysis of variance (ANOVA)
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9
Q

Parametric test to test relationship

A

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

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10
Q

Non parametric tests to test difference

A

Chi squared
Mann Whitney test
Kruskal Wallis test

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11
Q

Non parametric test to test relationship

A

Spearmans rank correlation

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