HKDSE (Hong Kong) · Mathematics Compulsory Part
Data Handling
14 practice questions, each with the answer and an explanation.
Practise Data Handling now
Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 14 questions
- Find the mean of the numbers 17, 11, 10, 9, 8.
- The mean of 9 numbers is . A new number is added. What is the new mean?
- Find the mode of 4, 24, 4, 4, 15, 15.
- Find the range of 5, 6, 10, 12, 15.
- Find the mode of 6, 6, 11, 6, 20, 24.
- Find the range of 2, 5, 6, 8, 19.
- Find the range of 2, 5, 6, 19, 20.
- Find the mode of 21, 19, 5, 5, 5, 13.
- A bag has 7 red balls and 6 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.
- A bag has 6 red balls and 4 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.
- A bag has 5 red balls and 3 white balls. Two balls are drawn one after another without replacement. Find the probability that both are red.
- A bag has 7 red balls and 3 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.
- A bag has 3 red balls and 6 white balls. Two balls are drawn one after another without replacement. Find the probability that both are red.
- A bag has 3 red balls and 5 white balls. Two balls are drawn one after another without replacement. Find the probability that both are red.