NDA 2025
- Exam
- NDA
- Year
- 2025
- Subject
- Mathematics
- Chapter
- Statistics
NDA 2025 · Mathematics · Statistics
Consider the following for the four (04) items that follow: The...
Consider the following for the four (04) items that follow:
The frequency distribution of height of students of a class is given below:
The height which occurs most frequently in the class is
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 height which occurs most frequently in the class is
Options
- A cm
- B cm
- C cm
- D cm
Correct answer
D. cm
Step-by-step solution
The height which occurs most frequently corresponds to the mode of the given frequency distribution.
The maximum frequency is , which corresponds to the class interval . Thus, the modal class is .
The lower limit of the modal class,
Frequency of the modal class,
Frequency of the class preceding the modal class,
Frequency of the class succeeding the modal class,
Class size,
The mode is calculated using the formula:
Substituting the values:
The height which occurs most frequently is cm.
Answer: cm
The maximum frequency is , which corresponds to the class interval . Thus, the modal class is .
The lower limit of the modal class,
Frequency of the modal class,
Frequency of the class preceding the modal class,
Frequency of the class succeeding the modal class,
Class size,
The mode is calculated using the formula:
Substituting the values:
The height which occurs most frequently is cm.
Answer: cm