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About This Drill
SAT Math: Statistics and Probability (Drill 3) is a Math practice drill covering Statistics and Probability. It contains 5 original questions created by Brian Stewart, a Barron's test prep author with over 20 years of tutoring experience.
SAT statistics and probability questions cover measures of center and spread, interpreting standard deviation conceptually, computing probability using rules for independent and mutually exclusive events, and reading information from frequency tables and dot plots.
Questions in This Drill
- A data set has values {4, 8, 8, 10, 15}. If the value 15 is removed, which measure of center changes the most?
- A bag contains 5 red, 3 blue, and 2 green marbles. If one marble is drawn at random, what is the probability it is NOT green?
- Data set A: {10, 10, 10, 10, 10}. Data set B: {2, 6, 10, 14, 18}. Both have the same mean. Which has the greater standard deviation?
- In a survey, 60% of respondents prefer coffee. If two respondents are chosen at random from a large population, what is the approximate probability both prefer coffee?
- A student's test scores are 78, 85, 92, 88, and one unknown score. If the student needs a mean of 86 across all five tests, what score is needed on the fifth test?