Predict from a random sample
Use the fraction found in the sample on the whole population.
Loading a question…
You've done today's 10 free questions.
Come back tomorrow for 10 more, or get unlimited practice with a membership.
Want more today? Print 20 more questions free, with the answers.
Already a member? Sign in.
See worked examples
In a random sample of 40 students, 22 prefer pizza for lunch. The school has 320 students. About how many students in the school would you predict prefer pizza for lunch? (Write a number; it may be a decimal.)
Answer: 176
In a random sample of 100 students, 4 walk to school. The school has 1300 students. About how many students in the school would you predict walk to school? (Write a number; it may be a decimal.)
Answer: 52
In a random sample of 40 students, 7 own a bike. The school has 280 students. About how many students in the school would you predict own a bike? (Write a number; it may be a decimal.)
Answer: 49
Tip: Use the fraction found in the sample on the whole population.
Print a worksheet of this skill New questions and an answer key, free.
Up next
- Next in this topic Range of a data set Year 8
- Ready for more Describe the association in a scatter plot from data Year 9
- Need a warm-up? Read values from a dot plot on a number line Year 7
Print a free worksheet with answers (20 questions).
Practise without limits
Members practise as much as they like, every day, and get the printable packs and lessons too.