Correct Answer: Option C

Explanation

Rearranged: 12,13,15, 36, 39, 41, 41, 43, 43, 47 and 49

Lower quartile or First quartile = \(\frac{total number of items}{4}\)

If odd: items numbers + 1 → \(\frac{11 items + 1}{4}\)

= \(\frac{12}{4}\)

Lower quartile = 3rd iems →15

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