Module 7 Practice Questions (2)

Module 7 Practice Questions (2)

Assessment

Flashcard

Mathematics

University

Practice Problem

Hard

Created by

Wayground Content

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16 questions

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1.

FLASHCARD QUESTION

Front

What is a continuous random variable?

Back

A continuous random variable can take any value within a given range. Examples include measurements like height, weight, and temperature.

2.

FLASHCARD QUESTION

Front

What is a discrete random variable?

Back

A discrete random variable can take only specific values, often counted in whole numbers. Examples include the number of books, pets, or cars.

3.

FLASHCARD QUESTION

Front

What is the mean of a probability distribution?

Back

The mean of a probability distribution is the average value, calculated as the sum of all possible values multiplied by their probabilities.

4.

FLASHCARD QUESTION

Front

Classify the number of cheeseburgers served at a restaurant: Continuous, Discrete, or Abstract?

Back

Discrete - because it can only take whole number values.

5.

FLASHCARD QUESTION

Front

How do you calculate a z-score?

Back

Z-score = (X - μ) / σ, where X is the value, μ is the mean, and σ is the standard deviation.

6.

FLASHCARD QUESTION

Front

What is the z-score for Sarah who earns $30 an hour, given a mean of $35 and a standard deviation of $5?

Back

-1.0

7.

FLASHCARD QUESTION

Front

What is the probability distribution?

Back

A probability distribution describes how the probabilities are distributed over the values of a random variable.

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