A2 Probability & Statistics Review

Front

What is a Controlled Experiment?

Back

A controlled experiment is a scientific test where one variable is changed while all others are kept constant to determine the effect of that variable.

Front

What is an Observational Study?

Back

An observational study is a research method where the researcher observes and records behavior without manipulating any variables.

Tags

CCSS.HSS.IC.B.3

Front

What is a Sample in statistics?

Back

A sample is a subset of a population selected for observation and analysis.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a Population in statistics?

Back

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

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is Sampling Bias?

Back

Sampling bias occurs when the sample is not representative of the population, leading to inaccurate results.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is the importance of Random Sampling?

Back

Random sampling ensures that every individual has an equal chance of being selected, which helps to eliminate bias.

Tags

CCSS.HSS.IC.B.3

Front

What is a Survey?

Back

A survey is a method of collecting data by asking questions to a group of people.

Tags

CCSS.6.SP.B.5B

Front

What is a Sample Space in probability?

Back

The sample space is the set of all possible outcomes of a probability experiment.

Front

What are the possible outcomes when flipping two coins?

Back

HH, HT, TH, TT.

Front

What is a Systematic Sample?

Back

A systematic sample is obtained by selecting every nth individual from a population.

Tags

CCSS.HSS.IC.B.3