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Examples 1-2 page 10: {n1¦n3¦n5¦n7} · {n9¦n11} · {n13¦n15¦n17¦n19}
Nominal, ordinal, interval or ratio?
Choose the appropriate measurement level.
1-2 page 10 number 13 Link to answers
Numbers on the shirts of marathon runners
are nominal because the numbers are labels and cannot be ranked or used for any mathematical purpose.
1-2 page 10 number 15 Link to answers
Social Security Numbers
are nominal because the numbers identify individuals. SSN's cannot be ranked and do not serve any mathematical purpose.
1-2 page 10 number 17 Link to answers
The years of Cicada emergence 1936, 1953, 1970, 1987, 2004
are interval because the difference betwen the numbers is meaningful but the ratio and the zero point are meaningless.
1-2 page 10 number 19 Link to answers
Movie ratings of 1 star, 2 stars, 3 stars
are ordinal because the ratings can be ranked but no mathematical operations are meaningful.