A **discrete** random variable is one whose possible values:
AAre finite or countably infinite
BForm an interval of real numbers (uncountably infinite)
CAre always negative
DAre obtained only by measurement
Answer & Solution
Correct answer: A. Are finite or countably infinite
Discrete RV: finite or countably infinite values (typically non-negative integers — number of heads, defective items, etc.). Continuous RV has uncountably infinite values forming an interval.
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