Review - Analyzing Two Variable Data

Front

What is the explanatory variable in a study?

Back

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

Front

What happens to the mean when an outlier is removed from a dataset?

Back

The mean will typically decrease if the outlier is significantly higher than the other values.

Front

What are the key components to describe the relationship between two quantitative variables?

Back

The key components are shape, strength, direction, and outliers.

Front

What is the response variable?

Back

The response variable, also known as the dependent variable, is the variable that is measured or observed in an experiment.

Front

Which chart is best for illustrating the relationship between two quantitative variables?

Back

A scatterplot is the best chart for illustrating the relationship between two quantitative variables.

Front

What is an outlier?

Back

An outlier is a data point that differs significantly from other observations in a dataset.

Front

Define correlation in the context of two variables.

Back

Correlation measures the strength and direction of a linear relationship between two quantitative variables.

Front

What does a positive correlation indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What is the purpose of a scatterplot?

Back

A scatterplot visually represents the relationship between two quantitative variables, allowing for the identification of patterns, trends, and outliers.