Sampling and Bias

Simple random sampling always guarantees that the sample is perfectly representative.

Systematic sampling can be biased if the list has a pattern.

A large sample always means a good sample.

Which scenarios would likely create biased samples?

Which of these can lead to sampling bias?

Voluntary response sampling is typically unbiased.

A researcher sends a survey by email. What should they do to reduce bias?

Which sampling method is used if participants are selected by spinning a wheel?

What is the main advantage of using stratified sampling?

Self-selection bias is a type of sampling bias.

All students in 2 randomly chosen classrooms are surveyed. This is:

Which practices can help avoid bias in sampling?

An online poll asks visitors to rate their experience. What method is this?

Which method is most likely to introduce bias?

What is a sample?

What type of bias occurs when some groups are more likely to participate?

A researcher picks every 5th person on a list. What method is this?

Voluntary response sampling can lead to sampling bias.

What is a population in statistics?

Nonresponse bias happens when everyone answers your survey.

Students choose to complete an optional feedback survey. What method is this?

A city is divided into 10 neighborhoods. One is chosen randomly, and everyone in that neighborhood is surveyed. This is:

Which of these would reduce sampling bias?

Which scenario is most likely to contain bias?

Sampling bias can occur when the sample does not accurately represent the population.

Which method gives everyone an equal chance of being selected?

Which of the following is NOT a form of sampling bias?

Using a school’s top 10 students to study study habits will likely result in bias.

Which of these are strategies to reduce sampling bias?

Which method is most likely to avoid sampling bias?

What is one common cause of sampling bias?

A teacher surveys only students sitting in the front row. This is:

Which of these is NOT a probability-based sampling method?

Which of these are types of sampling bias?

What is one way to reduce sampling bias?

A fitness club surveys only people who attend classes at 6 a.m. Why might this be biased?

A researcher surveys mall shoppers during working hours. What’s the most likely bias?

A school surveys 10 random students from each grade. This is: