A pie chart represents a category with frequency 25 in a total frequency of 100. What is the sector angle?
Correct answer: B. 90 degrees
- A. 45 degrees
- B. 90 degrees
- C. 120 degrees
- D. 150 degrees
Explanation
The sector angle is calculated as frequency divided by total frequency multiplied by 360 degrees. Thus, 25 divided by 100 multiplied by 360 gives 90 degrees.
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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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