Math Models B Credit Recovery Exam

First Name

Last Name

What is your Student ID #?

Question 1. A subset or group selected from a population is a _________.

• A. Sample
• B. Population
• C. Statistic

Question 2. Data collected from a sample is _________.

• A. Sample
• B. Population
• C. Statistic

Question 3. A complete group that someone is interested in studying is known as a _____________.

• A. Sample
• B. Population
• C. Statistic

Question 4. What are the three ways to collect data?

• A. Surveys, Treatments, Phone Calls
• B. Observations, Visiting them at home, Phone calls
• C. Surveys, Observations, Experiments

Question 5. Which symbol represents the Sample Mean?

• 
• 
• 

Question 6. Which symbol represents the Sample Population?

• 
• 
• 

Question 7. The data in the chart above represents the number of brown cows on a sample of 20 farms from a population of 250 farms in Alabama. What is the estimated Sample Mean (x bar) from the data collected.

• A. 41.2 cows
• B. 40.4 cows
• C. 38.5 cows