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Find the median: 28, 30, 35, 31, 27, 46, 32, 44, 33, 25 - Mathematics

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Question

Find the median:

28, 30, 35, 31, 27, 46, 32, 44, 33, 25

Sum
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Solution

Given: 28, 30, 35, 31, 27, 46, 32, 44, 33, 25

Step-wise calculation:

1. Arrange in ascending order: 25, 27, 28, 30, 31, 32, 33, 35, 44, 46.

2. n = 10 (even), so median = average of the `(n/2)`th and `(n/2 + 1)`th observations (i.e., 5th and 6th).

3. 5th = 31 and 6th = 32 Median = `(31 + 32)/2` = 31.5

Median = 31.5

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Notes

The answer in the textbook is incorrect.

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Chapter 15: Statistics - Exercise 15C [Page 303]

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Nootan Mathematics [English] Class 9 ICSE
Chapter 15 Statistics
Exercise 15C | Q 17. (iv) | Page 303
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