To find the lower quartile, median, and upper quartile, we first need to sort the data set in numerical order:
2, 2, 5, 7, 8, 9
There are 6 numbers in the data set, making the median the average of the middle two numbers:
Median = (5 + 7) / 2 = 6
To find the lower and upper quartiles, we divide the data set into two equal parts. The lower quartile would be the median of the lower half:
Lower Quartile = (2 + 2) / 2 = 2
The upper quartile would be the median of the upper half:
Upper Quartile = (8 + 9) / 2 = 8.5
Therefore, the lower quartile is 2, the median is 6, and the upper quartile is 8.5.
In the data set below, what are the lower quartile, the median, and the upper quartile?
225789
lower quartile =
median =
upper quartile =
1 answer