2.5.1 levels of measurement Flashcards Preview

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Flashcards in 2.5.1 levels of measurement Deck (16)
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1
Q

what are the four levels of measurement?

A

nominal data
ordinal data
interval data
ratio data

2
Q

what is nominal data?

A

frequency headcount of the no. of times something occurred found in discrete categories

3
Q

give an example of nominal data?

A

the no. of people who passed an exam

4
Q

what is a strength of nominal data?

A

easy to analyse

5
Q

what is a weakness of nominal data?

A

least powerful - doesn’t tell us a lot

6
Q

when is a variable measured at ordinal level?

A

when scores in the variable are ordered in rank

7
Q

give an example of ordinal data:

A

grades for an exam

8
Q

in ordinal data what is unknown?

A

intervals between each rank - you don’t know how much better people have done

9
Q

what is a weakness of ordinal data?

A

limited

10
Q

what is a strength of ordinal data?

A

more info than nominal

11
Q

what is interval data?

A

data that measures on a scale allowing to order values highest to lowest and know distance between each rank

12
Q

what can interval data be?

A

negative e.g. temperature

13
Q

what is ratio data?

A

interval data with a zero point

data that measures on a scale allowing to order values highest to lowest and know distance between each rank

14
Q

give an example of ratio data:

A

exam scores

15
Q

what is a strength of ratio data?

A

most useful

16
Q

what is a weakness of ratio data?

A

time consuming

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