7.SP.1 - Population vs. Sample & Biased vs. Unbiased

Front

What is a population in statistics?

Back

A population is the entire group of individuals or items that we want to study or gather information about.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a sample in statistics?

Back

A sample is a subset of individuals or items selected from a population, used to represent the population in a study.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What does it mean for a sample to be unbiased?

Back

An unbiased sample accurately represents the population, meaning every individual has an equal chance of being selected.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What does it mean for a sample to be biased?

Back

A biased sample does not accurately represent the population, leading to skewed or misleading results.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

Why is random sampling important?

Back

Random sampling ensures that every member of the population has an equal chance of being included, reducing bias.

Tags

CCSS.HSS.IC.B.3

Front

What is the difference between a population and a sample?

Back

A population includes all members of a group, while a sample includes only a portion of that group.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is an example of a biased sample?

Back

Surveying only the students in a gifted program to determine the average academic performance of all students.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is an example of an unbiased sample?

Back

Surveying 50 randomly selected students from all grades in a school to determine overall student preferences.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a census?

Back

A census is a complete count of a population, collecting data from every member.

Tags

CCSS.6.SP.B.5A

Front

What is a survey?

Back

A survey is a method of collecting data from a sample to infer information about the population.

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CCSS.HSS.IC.B.3