To find the upper quartile, we need to first find the median and then find the median of the upper half of the data set.
First, let's arrange the data set in ascending order: 2, 13, 14, 14, 15, 17, 18, 19.
The median is the middle value of the data set, which is 15.
Next, we need to find the median of the upper half of the data set. The upper half is: 17, 18, 19.
The median of the upper half is (18 + 19) / 2 = 37 / 2 = 18.5.
Therefore, the upper quartile is 18.5.
Use the following data set to answer this question:
14, 17, 13, 15, 14, 19, 2, 18
What is the upper quartile?
*
15
15.5
17
17.5
1 answer