0.19. Inferential Statistics Flashcards

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1
Q

What level of significance should be used?

A

0.05 level of significance unless the question tells you otherwise

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2
Q

What does 0.05 mean?

A

5% occurred by chance (extraneous variables are not controlled)
You are 95% sure the IV manipulation (conditions) caused by the DV effect (measurement)

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3
Q

What is nominal data?

A

Data from categories i.e. smoker 300, non smoker 750

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4
Q

What is ordinal data?

A

Data ordered i.e. smallest to largest
It is subjective
I.e. how happy you are today/ how well you slept 1-7

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5
Q

What is interval data?

A

Equal units increments between each unit (time, distance, temp)

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6
Q

How do you choose a test?

A
  • Is it a test of difference or relationship/ correlation/ association
  • What is the level of measurements (data) -> nominal, ordinal or interval
  • What is the experimental design (how are ppts used -> independent or repeated)
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