General Secondary Certificate (Tawjihiya Kuwait) · Pure Mathematics

Data Handling

13 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 13 questions

  1. Find the median of 14, 5, 19, 18, 4.
  2. Find the mode of 21, 17, 1, 1, 16, 1.
  3. Find the range of 3, 9, 17, 18, 19.
  4. A bag has 4 red balls and 6 white balls. Two balls are drawn one after another without replacement. Find the probability that both are red.
  5. A bag has 6 red balls and 2 white balls. A ball is drawn, replaced, and then a second ball is drawn. Find the probability that the two balls are of different colours.
  6. A bag has 4 red balls and 5 white balls. Two balls are drawn one after another without replacement. Find the probability that both are red.
  7. A bag has 3 red balls and 5 white balls. A ball is drawn, replaced, and then a second ball is drawn. Find the probability that the two balls are of different colours.
  8. A bag has 4 red balls and 4 white balls. Two balls are drawn one after another without replacement. Find the probability that both are red.
  9. The variance of a data set is 16. What is its standard deviation?
  10. A data set has mean 5 and standard deviation 2. Every value is multiplied by 3. What are the new mean and standard deviation?
  11. Find the variance of the data 2, 4, 6, 8, treating them as a whole population.
  12. and are mutually exclusive events with and . Find .
  13. In a school, 60% of students study physics and 25% study both physics and chemistry. A student who studies physics is chosen at random. What is the probability that this student also studies chemistry…

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