Question

In the data set below, what are the lower quartile, the median, and the upper quartile?
1 1 3 6 6 7 7
lower quartile =


median =


upper quartile =

Answer 1

Data (ordered): 1, 1, 3, 6, 6, 7, 7 (n = 7)

- Median (middle value) = 4th value = 6
- Lower quartile = median of lower half (1, 1, 3) = 1
- Upper quartile = median of upper half (6, 7, 7) = 7

So: lower quartile = 1, median = 6, upper quartile = 7.