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monitta
2 years ago
11

Find the interquartile range of the data. 4,6,4,2,9,1,12,7

Mathematics
1 answer:
mariarad [96]2 years ago
3 0

Answer:

<u>Arrange</u>: 1, 2, 4, 4, 6, 7, 9, 12.

(Q1) = (N + 1) × 1/4.

  • 4 + 1 × 1/4 = 5/4

(Q3) = (N + 1) × 3/4.

  • 6 + 1 × 3/4 = 21/4

So, IQR = Q3 - Q1

  • 21/4 - 5/4 = 21 - 5/4
  • 16/4 = 4

Explanation:

<u>Do these simple steps to find IQR if any data</u>:-

  • Order the data from least to greatest.
  • Find the median.
  • Calculate the median of both the lower and upper half of the data.
  • The IQR is the difference between the upper and lower medians.

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