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Flashcards in Chapter 4 Deck (49)
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1

What is the major task in measurement?

It is to represent the research values numerically.

2

What is the measurement for each person in research?

It is the data which is to be analysed and reported.

3

In assigning numbers to a variable, what do we work with?

1) The abstract number system:
2) The variable that we wish to measure

4

What does the abstract number system involve?

This includes identity, magnitude, equal intervals and true zero.

5

Why is accurate measurement critical?

Accurate measurement is critical as an elementary mistake can invalidate a whole research project.

6

What is the property of a nominal level of measurement?

Identity

7

What is the property of an ordinal level of measurement?

Identity, magnitude

8

What is the property of a interval level of measurement?

Identuty, magnitude, equal intervals

9

What are the properties of a ratio level of measurement?

Identity, magnitude, equal intervals, true zero point

10

What are the mathematical operations at a nominal level of measurement?

None

11

What are the mathematical operations at the ordinal level of measurement?

Rank order

12

What are the mathematical operations at an interval level of measurement?

Add/subtract

13

What are the mathematical operations at an ratio level of measurement?

add, subtract, divide, multiply

14

What type of data is obtained at a nominal level of measurement?

Nominal

15

What type of data is obtained at a ordinal level of measurement?

Ordered

16

What type of data is obtained at a interval and ratio level of measurement?

Score

17

What are the lowest scale of measurement?

Nominal scale

18

Do nominal scales match the number scale well?

No

19

What are niominal scales?

They are naming scales

20

What are exampoles of nominal scales?

Brand name choice or political affliation

21

What is the difference between categories in a nominal scale?

The differences are qualitative not quantitative.

22

With a nominal scale, can we assign numbers to different categories?

Yes

23

Do nominal scales have no zero point?

No

24

Can nominal scales be ordered from low to high?

No

25

We a nominal scale can we make assumptions about equal units of measurement for a nominal scale?

No

26

What properties do ordinal scales have?

They have the property of magnitude as well as identity.

27

What do ordinal scales do?

They measure a variable in order of magnitude, which larger numbers reprepresening more of the variable than smaller numbers.

28

What is interval scaling?

When the measurements convey information about the both the order and the distance between values, we have interval scaling.

29

Do interval scales have the properties of ordinal scales?

Yes, they also have equal intervals between consecutive values on the scale.

30

What scale provides the highest level of measurement?

Ratio scales