Statistical Diagrams Quiz
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5 questions, one answer each
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1. What is the purpose of a key on a stem-and-leaf diagram?
- A. To show the total frequency
- B. To explain how to read the stem and leaf values
- C. To label the axes
- D. To show the mode
2. Which diagram is best for comparing two data sets across the same categories side by side?
- A. Pie chart
- B. Pictogram
- C. Dual (side-by-side) bar chart
- D. Stem-and-leaf diagram
3. In a stem-and-leaf diagram, the leaves in each row should be:
- A. In the order the data was collected
- B. Ordered from smallest to largest
- C. Ordered from largest to smallest
- D. Grouped by colour
4. What is essential when using a pictogram to display frequency?
- A. A ruler
- B. A key showing what each symbol represents
- C. A pie chart alongside it
- D. A cumulative frequency curve
5. Two classes' test scores are compared. Class A has a higher mean but a much larger range than Class B. Which statement best interprets this?
- A. Class A scored higher on average and had more variation (less consistency) in scores than Class B
- B. Class A and Class B performed identically
- C. Class B definitely has more students than Class A
- D. Range has no relevance when comparing data sets