MAT 1272 Statistics, SP2014

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  • #13687

    Ezra Halleck
    Participant

    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

    #17694

    Ezra Halleck
    Participant

    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

    #17700

    Ezra Halleck
    Participant

    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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