Determine which of the four levels of measurement (nominal, ordinal,interval,rat

Question

Determine which of the four levels of measurement (nominal, ordinal,interval,ratio)is most appropriate for the data .Alert system of yellow (lowest),orange,and red (highest) Choose the correct answer below.

A. The nominal level of measurement is most appropriate because tha data can not be ordered.

B. The ordinal level of measurement is most appropriate because the data can be ordered,but differences (obtained bysubtraction) can't be found meaningless.

C. The ratio level of measurement is most approriate because the data can be ordered. differences (obtained by subtraction) can be found and are meaningful,and there is a natural starting point.

D. The interval level of measurement is most appropriate because the data can be ordered,differences (obtained by subtraction) can be found and are meaningful,and there is no natural starting point.

Explanation / Answer

Solution : The answer is

C. The ratio level of measurement is most approriate because the data can be ordered. differences (obtained by subtraction) can be found and are meaningful,and there is a natural starting point.

Data at the ratio level possess all of the features of the interval level, in addition to a zero value.

Due to the presence of zero , it now makes sense to compare the ratios of measurements.

At the ratio level of measurement, not only can sums and differences be calculated, but also ratios.

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