What is the interquartile range for this set of data? 5, 4, 7, 3, 10, 2, 11, 9

Question

Quizplus · Accepted Answer

To find the interquartile range, we first need to find the median (Q2) of the data set. In this case, the median is 7.

Next, we need to find the median of the lower half of the data set (Q1). To do this, we need to order the data set from least to greatest: 2, 3, 4, 5, 7. The median of this lower half is 4.

Finally, we need to find the median of the upper half of the data set (Q3). To do this, we need to order the data set from least to greatest: 2, 3, 4, 5, 7, 9, 10, 11. The median of this upper half is 10.

Now, we can find the interquartile range by subtracting Q1 from Q3:

10 - 4 = 6

Therefore, the interquartile range is 6, and the best choice is B.

What Is the Interquartile Range for This Set of Data