Stats Flashcard 2

Front

Identify the Population: Wicomico County Public Schools randomly selected 230 teachers to find out which technology resource its teachers feel is the most effective.

Back

All Wicomico County Teachers

Front

This research method is a technique for ascertaining the self-reported attitudes or behaviors of a particular group, usually by questioning a representative, random sample of the group.

Back

Survey

Front

Which of the following is true? The explanatory variable is used to explain or predict the value of the response variable.

Back

True

Front

Unbiased sampling is:

Back

When any member of the population is equally likely to be chosen for the sample.

Front

What is the difference between an observational study and an experiment?

Back

Experiments impose treatment on the subjects.

Front

What is a population in statistics?

Back

The entire group of individuals or instances about whom we hope to learn.

Front

What is a sample in statistics?

Back

A subset of the population selected for analysis.

Front

Define response variable.

Back

The variable that is measured to see how it is affected by the explanatory variable.

Front

Define explanatory variable.

Back

The variable that is manipulated or categorized to observe its effect on the response variable.

Front

What is biased sampling?

Back

When certain members of the population are more likely to be selected than others.