The third quartile containing approximately ______ % of the data.
- 50
- 100
- 75
- None of these
Explanation
The third quartile (Q3) is the value below which 75% of the data falls.
Quartiles divide data into four equal parts, and Q3 marks the 75th percentile.
Additional Information:
Quartiles divide an ordered data set into four equal parts (quarters). We use subscript notation to label the quartiles: Q1, Q2, and Q3.
The first quartile, Q1, is 1/4 (or 25%) of the way through the data – the lower quartile.
The second quartile, Q2, is 1/2 (or 50%) of the way through the data – the median.
The third quartile, Q3, is 3/4 (or 75%) of the way through the data – the upper quartile.
Example data:
3, 4, 4, 5, 6, 8, 10
LQ (Q1): 4
Median (Q2): 5
UQ (Q3): 8
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