A monthly report to the Texas Department of Health, division of Water Hygiene, contained the following water production data in thousands of gallons:
5263 5636 5264 4395 6090 5293 4668 5725 5171 4378
5118 5538 4838 5167 5119 5438 6843 5262 4653 5303
5913 4570 5142 5964 6431 4719 5358 6043 4554 5805
What is the value of the interquartile range. The values are rounded (no decimal values included).
A) 937
B) 752
C) 886
D) 912
You have 30 scores. Arrange them in order of value.
The middle 15 scores determine the interquartile range. In this case, it will be 7 1/2 scores above and below the median.
I hope this helps. Thanks for asking.