Which of the following is an example of a continuous variable?

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Multiple Choice

Which of the following is an example of a continuous variable?

Explanation:
A continuous variable is something that can take an infinite number of values along a continuum, with values that can be measured to increasing precision. Time to solve a problem fits this idea because you can measure it in seconds, milliseconds, microseconds, and so on, and you can keep adding more precise measurements (12.0, 12.01, 12.001 seconds, etc.). In contrast, the other options are discrete or categorical: gender is a category, not a measurement along a scale; the number of males in a class and the number of children in a family are counts, which must be whole numbers and cannot take on fractional values. So the example of a continuous variable is the time to solve a problem.

A continuous variable is something that can take an infinite number of values along a continuum, with values that can be measured to increasing precision. Time to solve a problem fits this idea because you can measure it in seconds, milliseconds, microseconds, and so on, and you can keep adding more precise measurements (12.0, 12.01, 12.001 seconds, etc.). In contrast, the other options are discrete or categorical: gender is a category, not a measurement along a scale; the number of males in a class and the number of children in a family are counts, which must be whole numbers and cannot take on fractional values. So the example of a continuous variable is the time to solve a problem.

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