Statistics, 2ADV EQ-Bank 3 MC

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

The number of text messages sent by a student in a day
The time taken for a swimmer to complete 100 m race
The number of cars in a school car park at 9 am
The number of siblings a student has

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\(B\)

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Time is a measurement that can take any value within an interval and is therefore continuous.
Options A, B and D are all counts that can only take whole number values, making them discrete.

\(\Rightarrow B\)