Answers:
- (a) Median
- (b) Lower quartile
- (c) Upper quartile
Explanation:
- (a) The median splits the data into two halves. 50% on one side, 50% on the other.
- (b) The lower quartile, aka "1st quartile" aka "Q1", separates the lower 25% block of values vs the upper 75% block of values.
- (c) The upper quartile, aka "3rd quartile" aka "Q3", separates the lower 75% vs the upper 25%.
Quartile refers to quarters. The median is sometimes known as Q2.