SAT · Math

Statistics and probability

17 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 17 questions

  1. The mean of five numbers is . Four of the numbers are . What is the fifth number?
  2. The mean of five numbers is . Four of the numbers are . What is the fifth number?
  3. The mean of five numbers is . Four of the numbers are . What is the fifth number?
  4. The mean of five numbers is . Four of the numbers are . What is the fifth number?
  5. The mean of five numbers is . Four of the numbers are . What is the fifth number?
  6. The mean of five numbers is . Four of the numbers are . What is the fifth number?
  7. What is the median of the data set ?
  8. What is the median of the data set ?
  9. What is the median of the data set ?
  10. What is the median of the data set ?
  11. A bag holds red, blue and green marbles. One marble is picked at random. What is the probability it is red?
  12. A bag holds red, blue and green marbles. One marble is picked at random. What is the probability it is red?
  13. A bag holds red, blue and green marbles. One marble is picked at random. What is the probability it is red?
  14. A bag holds red, blue and green marbles. One marble is picked at random. What is the probability it is red?
  15. A bag holds red, blue and green marbles. One marble is picked at random. What is the probability it is red?
  16. The mean of 8 test scores is 74. When the highest score is removed, the mean of the remaining 7 scores is 71. What was the highest score?
  17. A bag contains 4 red marbles and 6 blue marbles. Two marbles are drawn at random without replacement. What is the probability that both are the same color?

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