Answer:
Median: 23.5
Lower Quartile: 22.1
Upper Quartile: 26.3
Explanation:
To calulate the median, arrange the set of values in order ranging from the least to greatest. Then select the value that's the middle point in the set.
21.0, 21.6, 22.1, 22.3, 22.7, 23.5, 24.0, 25.5, 26.3, 28.6, 29.2
The median value would be 23.5 as it's the middle point in the set.
To calculate the lower quartile, select the median of the lower half of the set.
21.0, 21.6, 22.1, 22.3, 22.7, 23.5, 24.0, 25.5, 26.3, 28.6, 29.2
To calculate the upper quartile, select the median of the upper half of the set.
21.0, 21.6, 22.1, 22.3, 22.7, 23.5, 24.0, 25.5, 26.3, 28.6, 29.2