Which diagram is most suitable for showing the parts of a total as separate rectangular bars?
Correct answer: D. Bar diagram
- A. Stem-and-leaf plot
- B. Scatter diagram
- C. Line diagram
- D. Bar diagram
Explanation
A bar diagram uses separate rectangular bars to compare categories, with gaps normally appearing between them. A line diagram is more suitable for showing changes across ordered values or time.
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About Data Collection and Presentation
Data collection covers primary and secondary sources, qualitative and quantitative data, discrete and continuous variables, sampling methods and questionnaire design. Presentation includes frequency tables, grouped data, bar charts, histograms, pie charts, line graphs and cumulative frequency curves, with care over class intervals and misleading scales.
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