alleryStart learning →Which percentile marks the top of the bottom quartile of a normal distribution?
AThe 50th percentile
BThe 75th percentile
CThe 25th percentile
DThe 40th percentile
Answer & Solution
Correct answer: C. The 25th percentile
1. A quartile cuts the distribution into four equal parts.
2. The bottom quartile holds the lowest 25 percent of the values.
3. Its top edge is therefore the 25th percentile.
4. The 50th percentile would cut off the bottom half, which is twice as much.
_Source: OpenStax High School Statistics (CC BY 4.0), Ch 6 "The Normal Distribution", section 6.2 Using the Normal Distribution_
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