Review - Topics 1, 2, and 3

A gaming website wanted to find out which console its visitors owned.
Which choice best represents the population?

• Visitors to the 3DS section.
• All of the website visitors.
• Visitors to the PS4 section.
• Visitors who are on the website for more than 5 minutes.

A survey company was trying to see if people in a state thought the pollution was too high.
Which choice best represents a parameter?

• All people in the state.
• Percentage of all people in the state who thought the pollution was too high.
• 500 randomly selected residents of the state.
• 71% of the residents surveyed thought the pollution was too high.

A school principal wants to see which subject the 845 students in his school liked best.
Which choice best represents a parameter?

• 700 of the 845 students prefer math.
• 100 of the 120 students surveyed prefer math.
• 845 students
• 120 students surveyed

A musician wanted to see what people who bought his last album thought about the songs.
Which choice best represents a parameter?

• The percentage of all people who bought his last album that thought the songs were good.
• 50 people who bought the musician's last album
• 85% of the 50 people surveyed thought the songs were good.
• All 

A beverage company wanted to see if people in the United States liked their new logo.
Which choice best represents a population?

• A selection of logo artists.
• Every person in the United States.
• A selection of shoppers from different shoppers from different states.
• 3,800 children age 5-15

Determine whether the data are categorical or quantitative.
Drink Sizes at McDonalds (S, M, L)

• Categorical

• Quantitative

Time (in minutes) it takes for Mrs. Krapf to get to school

• Categorical

• Quantitative

Determine whether the data are categorical or quantitative.
Flavor of Buffalo Wing (Mild, Medium, Hot...)

• Categorical

• Quantitative

Determine whether the data are categorical or quantitative.
Speed of cars (measured in miles per hour) on the highway.

• Categorical

• Quantitative

A researcher wants to estimate the average height of women aged 20 years or older. From a simple random sample of 45 women, the researcher obtains a sample mean height of 63.9 inches.
The parameter is  ...

• average height of 63.9 inches from the sample of 45 women.
• the average height of all women aged 20 years or older.