Stats Intro for Algebra 2

In which method in data collection does the researcher intentionally intervene to arrange for a comparison of results?

• taking a survey

• making observations

• filling out a questionnaire

• conducting a controlled experiment

The best sampling method of obtaining a random sample of students who represent the entire population of a high school would be

• Selecting every other person entering the weight room.

• Selecting ever fifth person entering the school.

• Selecting the first thirty people entering the cafeteria.

• Asking volunteers in physical education class.

High School officials wanted to assess the need for a new diving board. They created a survey and distributed it to a large, diverse crowd at the State Swim Meet held at their school. Which characteristic of the survey is most likely to create a bias?

• the number of participants

• the height of the participants

• the way the set of data from the survey was analyzed

• the way the participants were selected to take the survey.

A controlled experiment would be most appropriate for which of the following studeis?

• Determining student's lunch preferences

• determining if calculator use improves test grades

• determining the personality factors that help children develop friendships

• determine which sports team is the favorite of the female students in a school

On the first day of a small local fair, 55 children, 20 adults, and 25 senior citizens were admitted. If children's tickets cost $5 each, adult tickets cost $8 each and senior citizens cost $6 each, what was the mean ticket price for all 100 people who entered?

• $6.35

• $5.20

• $5.85

• $6.33