to find quartiles

Based on the data in the stem and leaf plot, find the sum of the average of lower quartile and the middle quartile and the average of middle quartile and the upper quartile. => 50 or 40 or 43 or 44..

Find the upper quartile of the data. 89, 91, 92, 93, 94, 96, 99, and 87 => 92.5 or 94 or 90 or 95..

Find the lower quartile of the data set. 8, 4, 17, 32, 34, 14, 29, 23 and 21 => 8 or 14 or 11 or 21..

The box-and-whisker plot shows the number of cookies sold per day in a month. Find the lower quartile of the data. => 46 or 53 or 48 or 52..

What are the values of lower quartile and upper quartile of a data set, if its least value is 171, middle quartile is 257 and the greatest value is 304? => 171, 304 or 171, 257 or 257, 304 or Cannot be determined..

The position of the greatest value in a set of data is 11. What are the positions of the lower quartile, the middle quartile and the upper quartile? => 1, 3, 6 or 3, 6, 9 or 3, middle of 5 th and 6 th positions, 10 or Cannot be determined..

Annie conducted a math test for her students. The scores they got in the test are 16, 19, 9, 14, 31, 9, 24, 16, 19, 14 and 31. Find the difference between the lower quartile and the middle quartile of the data. => 9 or 14 or 16 or 2..

The owner of a super market recorded the number of customers who came into his store each hour in a day. The results were 11, 7, 9, 6, 14, 2, 5, 6, 11, 7 and 8. Find the lower quartile and upper quartile from the data. => 6, 11 or 6, 9 or 9, 11 or None of the above..

The number of days taken by each of 11 employees to finish a job were 32, 39, 27, 23,42, 35, 42, 29, 46, 37 and 42. Find the upper quartile of the data. => 42 or 46 or 39 or 30..

The box-and-whisker plot shows number of books sold per day in a month. Find the lower quartile of the box-and-whisker plot. => 38 or 36 or 43 or 42..