What defines a proportion?

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Multiple Choice

What defines a proportion?

Explanation:
A proportion is a part-to-whole relationship: the numerator is a part of the denominator, so the value represents what fraction of the total has a certain attribute. It can be expressed as a fraction, a decimal, or converted to a percentage. For example, if 60 of 100 people have the disease, the proportion is 60/100 = 0.60, or 60%. This distinguishes it from concepts that involve time or counts: a ratio that includes time describes a rate, not a proportion; the total number of cases is simply a count; and the difference between two rates is a rate difference, not a proportion.

A proportion is a part-to-whole relationship: the numerator is a part of the denominator, so the value represents what fraction of the total has a certain attribute. It can be expressed as a fraction, a decimal, or converted to a percentage. For example, if 60 of 100 people have the disease, the proportion is 60/100 = 0.60, or 60%. This distinguishes it from concepts that involve time or counts: a ratio that includes time describes a rate, not a proportion; the total number of cases is simply a count; and the difference between two rates is a rate difference, not a proportion.

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