NDA
Mathematics
Statistics
2025
NDA 2025 (Phase 1)
NDA Mathematics Question (2025) — Solution
Question
Consider the following for the four (04) items that follow: The frequency distribution of height of students of a class is given below: Height (in cm) Number of Students 160–162 12 162–164 15 164–166 24 166–168 13 The most appropriate graphical representation of the given frequency distribution is
Options
- A. bar chart
- B. percentage bar chart
- C. histogram
- D. pie chart
Step-by-step solution
The given frequency distribution consists of continuous class intervals (160-162, 162-164, 164-166, 166-168) representing a continuous variable (height). For continuous grouped frequency distributions, the most appropriate graphical representation is a histogram, as it displays the frequencies of continuous data using adjacent rectangular bars. Bar charts, percentage bar charts, and pie charts are generally used for categorical or discrete data. Answer: histogram
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