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The graph shows the cumulative frequency of the distribution of masses of fertilizer for 48...

Mathematics
JAMB 2001

The graph shows the cumulative frequency of the distribution of masses of fertilizer for 48 workers in one institution. Which of the following gives the inter-quartile range?

  • A. \(\frac{1}{2}(Q_3 - Q_1)\)
  • B. Q3 - Q2
  • C. Q3 - Q2
  • D. Q3 - Q1
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Correct Answer: Option D
Explanation

The interquartile range formula is the first quartile subtracted from the third quartile:

 

                                                                IQR = Q3 – Q1.

There is an explanation video available below.

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