Problem solving with cumulative frequency and histograms

12 questions

1. Which of the following is true for a histogram with unequal bar widths?
2. Here are the times taken to type the alphabet. Match the class width with its frequency.
3. Here is a histogram showing the time it takes to solve a puzzle. Match the class width with its frequency.
4. Which class' scores were more consistent?
5. Calculate the interquartile range from this cumulative frequency graph.
6. This table show information about the times taken by some children and adults to complete a puzzle. Compare their times. Which is the correct response to this question?
7. Match the statement with the definition.
8. Here are some test scores for Class A and Class B. Select the statement which is true.
9. Here are two box plots showing the scores of two classes. Select the statements which are true.
10. Here are three different cumulative frequency graphs showing different classes' test percentages. The scale is unlabelled but is the same for all graphs. Which class has the lowest average score
11. Here are three box plots showing different classes' test percentages. The scale is unlabelled but is the same for all graphs.
12. Here are some masses of sweets in a bag. 50% of the sweets are ≤ 120 g but greater than 80 g. What percentage are greater than 120 g but less than or equal to 180 g?

License: OGL