Mathematics · Probability Distributions
Which of the following statements regarding the Probability Mass Function (PMF) and Cumulative Distribution Function (CDF) are CORRECT? A. The Probability Mass Function is defined for discrete random variables only. B. The total sum of probabilities of all possible values in a valid PMF must be equal to 1. C. For a discrete random variable, the CDF is a step function where the size of the jump at a jump point equals the PMF at that point. D. The limit of the CDF as x approaches positive infinity is 0, and as x approaches negative infinity is 1. Choose the most appropriate answer from the options given below:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A, C and D Only
- 2A, B and D Only
- 3B, C and D Only
- 4A, B and C Only✓
Correct answer
A, B and C Only
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