levels of measurement

Question 1

categorical variable

Answer 1

data falls into separate categories

Question 2

measured variables

Answer 2

data measured on a scale of some kind, indiciating direction and relative position

Question 3

discrete variable

Answer 3

limited values, no real values between adjacent values

Question 4

continuous variable

Answer 4

infinite number of possible values on scale

Question 5

what are the four levels of measurement

Answer 5

ratio
interval
ordinal
nominal

Question 6

what do levels of measurement inform us

Answer 6

which descriptive and inferential statistics to use

Question 7

nominal level

Answer 7

data identified only by name, data falls into named categories

Question 8

ordinal level

Answer 8

data in relative order, or rank on a scale

Question 9

interval level

Answer 9

have equal intervals between values, but arbitrary zero point

Question 10

ratio level

Answer 10

equal intervals between value and absolute zero point

Question 11

re-coding

Answer 11

reducing data from higher to lower levels