Year 7 Numeracy: Statistics

A set of 6 test scores is: 14, 17, 14, __, 21, 9. The range of the scores is 16. What is the missing score?

The dot plot shows the distances (in metres) thrown by students in a ball-throw event. What is the range of the distances?

The grouped bar chart shows the number of library book loans across four genres in Term 1 and Term 2. In which genre did the number of loans increase by the most between Term 1 and Term 2?

A set of six data values has mean 15 and range 14. The smallest value is 8. Four of the other values are 12, 18, 20, and 16. What is the sixth value?

A set of six values has a mean of 12. Five of the values are 8, 15, 10, 13, and 9. What is the sixth value?

A class of 20 students recorded the number of siblings they each have. The results are shown in the table below. | Siblings | 0 | 1 | 2 | 3 | 4 | |---|---|---|---|---|---| | Students | 2 | 4 | 7 | 4 | 3 | What is the mean number of siblings?

A pictograph shows the number of cans collected by each class in a recycling drive. Each tin-can symbol represents 12 cans. Class 7A has 3 symbols, Class 7B has 2½ symbols, and Class 7C has 3 symbols. How many more cans did Class 7A collect than Class 7B?

The tally chart shows the number of library books borrowed each day for one week. If the same total number of books are borrowed each week, how many books are borrowed over 4 weeks?