statistics Flashcards

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1
Q

what does ‘p’ mean

A

p = the probability of results being due to chance

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2
Q

what do inferential statistics tell us

A

they allow us to draw inferences about the population

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3
Q

what do descriptive statistics tell us

A

they tell us about the sample taken from that population

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4
Q

what is a type I error

A

when the null hypothesis is rejected when it should have been accepted

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5
Q

what is a type II error

A

when the null hypothesis is accepted when it should have been rejected

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6
Q

what is nominal data

A

names and numbers
categorised, frequency data

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7
Q

what is ordinal data

A

data that can be ordered
eg. a list of scores

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8
Q

what is interval/ratio data

A

any formal measurement
eg. time, cm, kg

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9
Q

what test is used for related nominal data

A

sign test

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10
Q

what test is used for independent nominal data

A

chi squared

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11
Q

what test is used for related ordinal data

A

willcoxon

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12
Q

what test is used for independent ordinal data

A

mann whitney ‘U’

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13
Q

what test is used for related interval/ratio data

A

related t-test

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14
Q

what test is used for independent interval/ratio data

A

unrelated t-test

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15
Q

what experimental designs give related data

A

matched pairs and repeated measures designs

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16
Q

what experimental designs give independent data

A

independent measures

17
Q

how do you do the sign Test

A

add a + or - next to each result
find the total number of +
find the total number of -
S = whatever there are less of
compare S to the critical value, if S is less than or equal to the critical value, the results are significant!

18
Q

brian

A