task 3 - significance testing

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6 Terms

1
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one sample t-test

used to compare the mean to the stated value (hypothesised mean)

2
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f-test and two sample t-test

f-test: used when comparing two separate variants or standard deviations, if p>0.05, the use two sample t-test with ‘assume equal variants’. If p<0.05, then use two sample t-test with ‘assume unequal variants’

3
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one sample t-test hypotheses

H0: μB  = μA

H1: μB> μA OR H1: μB< μA

4
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two sample t-test hypotheses

H0: μA  = μB

H1: μA ≠ μB

5
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pooled standard deviation

when f-test provides a p value > 0.05

6
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paired t-test

used to compare the results of two different test methods