Prob Stat Final Exam 2024

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What is Volunteer Bias?

Back

Volunteer Bias occurs when individuals self-select to participate in a survey or study, leading to a sample that may not be representative of the general population.

Front

What does a box plot represent?

Back

A box plot visually displays the distribution of a dataset, highlighting the median, quartiles, and potential outliers.

Front

What is the first quartile in a box plot?

Back

The first quartile (Q1) is the value that separates the lowest 25% of the data from the rest.

Front

Define Population in statistics.

Back

Population refers to the entire group of individuals or instances about whom we hope to learn.

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How many ways can a president, vice president, secretary, and treasurer be elected from 125 seniors?

Back

232,593,000 ways.

Front

What is the formula for combinations?

Back

The formula for combinations is C(n, k) = n! / (k!(n-k)!), where n is the total number of items, and k is the number of items to choose.

Front

What is the formula for permutations?

Back

The formula for permutations is P(n, k) = n! / (n-k)!, where n is the total number of items, and k is the number of items to arrange.

Front

How do you calculate the total number of pizza combinations at Blaze Pizza?

Back

Total combinations = (number of meats) x (number of cheeses) x (number of crust types) x (number of sauces). For Blaze Pizza: 10 x 5 x 3 x 2 = 300 options.

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What is Response Bias?

Back

Response Bias occurs when respondents answer questions inaccurately due to various factors, such as misunderstanding the question or social desirability.

Front

What is Non-Response Bias?

Back

Non-Response Bias occurs when certain individuals do not respond to a survey, leading to a sample that may not represent the overall population.