Question 11-9-2
, ,
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?
- 11 , - 9 , 26 A data set of three numbers is shown. If
Medium-difficulty · SAT Math · Probability & Conditional Probability — Simple probability. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer 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 positive number in this data set. There are 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 .
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.
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