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2 cards from this section. Quick, good the night before a test.
Define a discrete random variable.
Think of examples that can be counted, like the number of flaws in a batch of products.
What is a continuous random variable?
Consider measurements like weight or time.
What is the defining characteristic of a discrete random variable?
Remember examples with a limited number of outcomes.
True or False: Continuous random variables only take exact values.
Think of real numbers in a range.
Consider a game where you roll two dice. Define the joint distribution for the sums of the two dice.
Examine the possible pairs that lead to each sum.
A manufacturer inspects a batch of products and records the number of defects and weight. How can you represent this using joint probability?
Consider how defects can relate to different weight categories.
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