Sampling and Bias

Front

Marianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names.

Back

Simple Random Sampling

Front

Why do we randomly select our samples?

Back

reduce bias

Front

Is Dylan's survey of the basketball team a biased sample of the school's population?

Back

Yes, because it is a convenience survey.

Front

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results? Options: thirty students who are often tardy, thirty students who are rarely tardy, thirty of her friends, thirty randomly selected students from her school

Back

thirty randomly selected students from her school

Front

What is the most favorite sport of 10th graders at CHS based on a survey conducted in office B Lunch?

Back

Biased because it is a volunteer sample

Front

The population describes: The group of people, objects or events being surveyed, a part of the group being surveyed, the whole world, the school

Back

The group of people, objects or events being surveyed

Front

How many candy bars do not have enough peanuts if the factory produces 20,000 candy bars and 15% did not have enough peanuts?

Back

3000

Front

Mrs. Trahan samples her class by selecting 5 girls and 7 boys. This type of sampling is called?

Back

Stratified

Front

Mrs. Trahan samples her class by selecting every third person on her class list. Which type of sampling method is this?

Back

Systematic

Front

Mrs. Trahan samples her class by selecting all students sitting at group 1 and group 5 in her classroom. This sampling technique is called?

Back

Cluster