Identify the variables associated with interval scale of measurement: A. Time…
2024
Identify the variables associated with interval scale of measurement:
A. Time of the day in 24-hour format
B. Date of birth
C. Weight
D. Height
Choose the correct answer from the options given below:
- A.
A and B Only
- B.
C and D Only
- C.
A, C and D Only
- D.
A Only
Attempted by 37 students.
Show answer & explanation
Correct answer: A
Definition: An interval scale has meaningful differences between values, but it does not have a true zero point (ratios are not meaningful).
Time of the day in 24-hour format — Interval scale: differences in time (hours/minutes) are meaningful, and the zero point (midnight) is arbitrary. Note that time-of-day is cyclical, but when considering intervals within the day it is treated as interval-level measurement.
Date of birth — Interval scale: differences between dates are meaningful (for example, number of years between dates), but there is no absolute zero for calendar dates.
Weight — Ratio scale: has a meaningful zero (no weight) and ratios are meaningful, so it is not interval.
Height — Ratio scale: has a meaningful zero and meaningful ratios, so it is not interval.
Answer: The variables measured on an interval scale are time of the day in 24-hour format and date of birth.
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