Unit 2 Exploring Two Variable Data Vocabulary

Front

What is a bivariate quantitative data set?

Back

A bivariate quantitative data set consists of observations of two different quantitative variables made on individuals in a sample or population.

Front

What does a scatterplot show?

Back

A scatterplot shows two numeric values for each observation, one corresponding to the value on the x-axis and one corresponding to the value on the y-axis.

Front

What is an explanatory variable?

Back

An explanatory variable is a variable whose values are used to explain or predict corresponding values for the response variable.

Front

What are the components of a scatter plot description?

Back

A description of a scatter plot includes form, direction, strength, and unusual features.

Front

How can the direction of association in a scatterplot be described?

Back

The direction of the association shown in a scatterplot can be described as positive or negative.

Front

What does a positive association in a scatterplot mean?

Back

A positive association means that as values of one variable increase, the values of the other variable tend to increase.

Front

What does a negative association in a scatterplot mean?

Back

A negative association means that as values of one variable increase, values of the other variable tend to decrease.

Front

How can the form of association in a scatterplot be described?

Back

The form of the association can be described as linear or non-linear to varying degrees.

Front

What does the strength of association in a scatterplot indicate?

Back

The strength of the association indicates how closely the individual points follow a specific pattern, such as linear, and can be described as strong, moderate, or weak.

Front

What are unusual features in a scatter plot?

Back

Unusual features include clusters of points or points with large discrepancies between the value of the response variable and a predicted value.