Ch 4 extra Review

Front

What is a random sample?

Back

A random sample is a subset of individuals chosen from a larger set, where each individual has an equal chance of being selected, ensuring that the sample represents the population.

Tags

CCSS.HSS.IC.B.3

Front

What is confounding in research?

Back

Confounding occurs when two or more variables are associated in such a way that their effects on a response variable cannot be separated, making it difficult to determine the true cause of an effect.

Front

What is a convenience sample?

Back

A convenience sample is a non-random sample that is taken from a group of people easy to reach, which may not accurately represent the population.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is the purpose of random assignment in experiments?

Back

The purpose of random assignment is to create roughly equivalent groups before treatments are administered, helping to eliminate bias.

Front

What is nonresponse bias?

Back

Nonresponse bias occurs when individuals selected for a survey do not respond, and their lack of response is related to the topic being studied, potentially skewing results.

Front

What is undercoverage bias?

Back

Undercoverage bias occurs when some members of the population are inadequately represented in the sample, leading to inaccurate conclusions.

Tags

CCSS.HSS.IC.B.3

Front

What is the placebo effect?

Back

The placebo effect is a phenomenon where participants experience a perceived improvement in condition due to their belief in the treatment, rather than the treatment itself.

Front

What is a response variable?

Back

A response variable is the outcome that is measured in an experiment to see if it is affected by changes in the explanatory variable.

Tags

CCSS.8.SP.A.4

Front

What is the significance of wording in survey questions?

Back

The wording of survey questions can significantly influence responses, leading to different interpretations and potentially biased results.

Tags

CCSS.RI.11-12.7

CCSS.RI.8.7

CCSS.RI.9-10.7

CCSS.RL.11-12.7

CCSS.RL.9-10.7

Front

What is a voluntary response sample?

Back

A voluntary response sample consists of individuals who choose to participate in a survey, often leading to biased results as those with strong opinions are more likely to respond.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1