Re: The numbers of passengers on 9 airline ﬂights were 22, 33,
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04 Oct 2019, 01:31
In this example that is mentioned in the Quant. Reasoning ETS P.308:
" Example 4.2.5: To find the quartiles for the ordered list of 16 numbers 2, 4, 4, 5, 7, 7, 7, 7, 7, 7, 8, 8, 9, 9, 9, 9, first divide the numbers in the list into two groups of 8 numbers each. The first group of 8 numbers is 2, 4, 4, 5, 7, 7, 7, 7 and the second group of 8 numbers is 7, 7, 8, 8, 9, 9, 9, 9, so that the second quartile, or median, is 7. To find the other quartiles, you can take each of the two smaller groups and find its median: the first quartile, Q sub 1, is 6 (the average of 5 and 7) and the third quartile, , Q sub 3, is 8.5 (the average of 8 and 9)."
When the set is divided into Q1 and Q3, each subset is 8 numbers. They took the 7s that were taken foe the median.
But at this example, the Median is excluded.
Pls Clarify.