Question

the following appear on a physicians intake form. identify the level of measurement of the data. (a) change in health (scale of - 5 to 5) (b) marital status (c) year of birth (d) weight (a) what is the level of measurement for \change in health (scale of - 5 to 5)\? nominal ratio ordinal interval (b) what is the level of measurement for \marital status\? interval nominal ordinal ratio (c) what is the level of measurement for \year of birth\? interval ordinal ratio nominal

Explanation:

(a) The change in health on a - 5 to 5 scale has an order (e.g., - 5 is worse than - 4), so it is ordinal.
(b) Marital status (e.g., single, married, divorced) is a categorical variable with no order, so it is nominal.
(c) Year of birth has no true zero (0 AD is an arbitrary starting - point) and differences are meaningful, so it is interval.
(d) Weight has a true zero (0 weight means absence of weight) and ratios are meaningful (e.g., a 100 - kg person is twice as heavy as a 50 - kg person), so it is ratio.

Answer:

(a) Ordinal
(b) Nominal
(c) Interval
(d) Ratio