PStat U1 Review

Which of the following is NOT an essential part of the statistical process?

• Collecting Data

• Analyzing Data

• Drawing Conclusions from Data

• Selling Data

Data is information about ________ that is gathered and organized using variables.

• A group of individuals

• Only one individual

• Random numbers

• People

Variables are characteristics about individuals which can take on:

• Many different values

• Only one value

• No specific values

• Up to two values

If it is not practical to collect data directly, what can we do instead?

• Conduct a simulation.

• Make assumptions based on personal opinions.

• Ignore the need for data.

• Use random guessing.

Which of the following is a categorical variable?

• Age
• Height
• Gender
• Weight

Which of the following is a quantitative variable?

• Class

• Gender
• Eye color
• Age

What are the two types of quantitative variables?

• Categorical and Interval

• Bivariate and Univariate

• Qualitative and Quantitative

• Discrete and Continuous

What is the frequency of individuals who are teenagers and prefer dogs?

• 48

• 24%

• 19

• 72%

What is the frequency of individuals who prefer cats?

• 93

• 19

• 47.5%

• 107

Of the individuals who prefer cats, what is the frequency of adults?

• 57

• 28.5%

• 8.5%

• 61.3%