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- PE1.6
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Describe each variable as nominal, ordinal, interval or ratio.
a. Color of eyes of people (blue or brown)
b. Number of births on a day in a hospital
c. Model of a car
d. Commuting time from home to work
e. Low temperature in Celsius for 20 locations on one day
From Vivian Gomez:
a. color of eyes of people. NOMINAL
b. Number of births on a day in a hospital. RATIO
c. Model of a car NOMINAL
d. Commuting time from home to work. RATIO
e. Low temperature in Celsius for 20 locations on one day. INTERVAL
Yes, Vivian, you are correct. Temperature is the tricky one. For those of you who have had some physics, you know that temperature is a measure of how the molecules that make up a substance are moving/vibrating. Celsius has a somewhat arbitrary measure of 0, which is the freezing point of water. However, there is an alternative way to measure temperature which is to call 0 “absolute zero”, when the molecules stop their movement in every aspect (no vibrations). If we used Kelvin as the scale is called, then temperature would as well be a ratio.
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