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Problem-Solving and Data Analysis Difficulty: Easy

$negative 11$ , $negative 9$ , $26$

A data set of three numbers is shown. If a number from this data set is selected at random, what is the probability of selecting a positive number?

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Explanation

Choice B is correct. The probability of selecting a positive number is the number of positive numbers in the data set divided by the total number of numbers in the data set. There is $1$ positive number in this data set. There are $3$ total numbers in this data set. Thus, if a number from this data set is selected at random, the probability of selecting a positive number is $\frac{1}{3}$ .

Choice A is incorrect and may result from conceptual or calculation errors.

Choice C is incorrect. This is the probability of selecting a negative number from this data set.

Choice D is incorrect and may result from conceptual or calculation errors.