1. Classify each of the following as qualitative (categorical) variables or as q

Question

1. Classify each of the following as qualitative (categorical) variables or as quantitative variables. For those which are quantitative, further classify as either discrete or continuous
(a) calendar years that members of your family were born in
(b) the lengths of newborn babies
(c) names of spices in your cupboard
(d) the temperature yesterday

2. Classify each of the following as to the level of measurement (nominal, ordinal, interval, or ratio).
(a) the year of the last presidential election
(b) your T-shirt size (S, M, L, XL)
(c) the length of time it takes you to travel to the college campus
(d) favorite M & M color

Explanation / Answer

1)

a) Eg: 1970, 1986, 1992. The number of possible years are finite. Quantitative - Discrete

b) Eg: 50.77cm, 54.234cm. Length has to be a continuous variable. Quantitative - Continuous  

c) Eg: Ginger, Pepper. These are labels, not numbers. Qualitiative

d) Eg: 30.6F, 40.11F. These are continuous variables, temperature can take up any value in the range. Quantitative - Continuous

2.

a) Interval - This does not have a true zero. So this is an interval value.

b) Ordinal - These are ordered variables and you don't know the difference between any of them - between S and M or L and XL.

c) Ratio - The time or length will always be a ratio variable.

d) Nominal - These are labels or names.

Cheers!

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