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3 cards from this section. Quick, good the night before a test.
What does non-negativity mean in the context of a PDF?
Think about the probabilities and their range.
True or False: The total area under a PDF curve must equal one.
Consider probabilities summing to 100%.
What is a key characteristic of a valid PDF?
Remember, probabilities cannot be negative.
True or False: The total area under a PDF equals zero.
Think about the definition of a PDF.
Propose a PDF for a scenario in which the variable X represents time taken to complete a task and demonstrate how you would find the probability of completing the task within a specific timeframe.
Use the properties of uniform distributions.
Create a continuous random variable with a given PDF and calculate the expected value and variance.
Work through the formula for expected value and variance iteratively.
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