8.11C Drawing Inferences from Populations 7PAR4.10

Front

What is a sample in statistics?

Back

A sample is a part of a group being surveyed, selected to represent the larger population.

Front

What is a population in statistics?

Back

A population is the entire group of individuals or instances about whom we hope to learn.

Front

What is a representative sample?

Back

A representative sample accurately reflects the characteristics of the population from which it is drawn.

Front

Why is random sampling important?

Back

Random sampling helps to eliminate bias and ensures that every member of the population has an equal chance of being selected.

Front

What is bias in sampling?

Back

Bias occurs when certain members of the population are more likely to be selected than others, leading to an unrepresentative sample.

Front

What is the difference between a sample and a population?

Back

A sample is a subset of a population, while a population includes all members of a specified group.

Front

What is the purpose of surveying a sample?

Back

The purpose is to gather information about the population without needing to survey every individual.

Front

What does it mean to draw inferences from data?

Back

Drawing inferences means making conclusions or predictions about a population based on the data collected from a sample.

Front

What is a stratified sample?

Back

A stratified sample is created by dividing the population into subgroups and then taking a sample from each subgroup.

Front

What is a convenience sample?

Back

A convenience sample is a non-random sample that is taken from a group that is easy to reach, which may lead to bias.