alleryStart learning →The pdf and the cdf differ in that the cdf gives:
AThe slope at a point
BThe count of outcomes
CArea under the curve
DThe curve's own height
Answer & Solution
Correct answer: C. Area under the curve
1. The two functions answer different questions about the same distribution.
2. The curve is called the probability density function, abbreviated pdf.
3. The density function is used to draw the graph of the distribution.
4. Area under the curve is given by a different function called the cumulative distribution function.
5. So the cdf reports area while the pdf reports the curve itself.
_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 5 'Continuous Random Variables', sections 5.1-5.3_
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