The interquartile range of a data set is 10 units. What does this represent?
A)
The median value of the data set must be 10 units.
B)
There are 10 units between the upper and lower quartiles.
C)
The middle 50% of the data in the set are less than 10 units.
D)
The upper and lower quartiles must be 10 units away from the median.

Question

The interquartile range of a data set is 10 units. What does this represent?
A)
The median value of the data set must be 10 units.	
B)
There are 10 units between the upper and lower quartiles.	
C)
The middle 50% of the data in the set are less than 10 units.	
D)
The upper and lower quartiles must be 10 units away from the median.

adamaero · Answer

In descriptive statistics, the interquartile range (IQR), also called the midspread or middle fifty, is a measure of statistical dispersion, being equal to the difference between the upper and lower quartiles, IQR = Q3 - Q1.

adamaero · Answer

http://www.mathsisfun.com/data/quartiles.html