11-1 and 11-2 Stats Questions and Sampling Methods

Front

What is the difference between a population and a sample in statistics?

Back

The population is the entire group being studied, while a sample is a subset of that population selected for analysis.

Front

Define 'parameter' in the context of statistics.

Back

A parameter is a numerical value that summarizes a characteristic of a population.

Front

Define 'statistic' in the context of statistics.

Back

A statistic is a numerical value that summarizes a characteristic of a sample.

Front

What is a census in statistics?

Back

A census is a survey that attempts to collect data from every member of a population.

Front

What is the purpose of random sampling?

Back

Random sampling aims to select a sample that is representative of the population, reducing bias.

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.

Front

What is an experiment in statistics?

Back

An experiment is a study in which the researcher manipulates one or more variables to observe the effect on another variable.

Front

What is bias in survey sampling?

Back

Bias occurs when certain members of a population are systematically more likely to be selected for the sample than others.

Front

What is the mean in statistics?

Back

The mean is the average of a set of numbers, calculated by dividing the sum of the values by the number of values.

Front

What is a variable in statistics?

Back

A variable is any characteristic, number, or quantity that can be measured or counted.