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

Explanation:

• (a) The change in health on a scale of - 5 to 5 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 a meaningful order and differences between values are meaningful, but no true zero (0 AD doesn't mean the absence of time), so it is interval.
• (d) Weight has a true zero (0 weight means no mass) and ratios are meaningful (e.g., 20 kg is twice 10 kg), so it is ratio.

Answer:

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