Exploring Bivariate Data Relationships

Front

What is bivariate data?

Back

Bivariate data involves two variables and is used to determine the relationship between them.

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two quantitative variables, showing the relationship between them.

Front

What does a positive correlation indicate in bivariate data?

Back

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

Front

What does a negative correlation indicate in bivariate data?

Back

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

Front

What is the correlation coefficient?

Back

The correlation coefficient (r) quantifies the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

Front

What does an r value of 0.87 indicate?

Back

An r value of 0.87 indicates a strong positive linear relationship between the two variables.

Front

What type of function might fit a scatterplot that curves upward?

Back

Both Quadratic and Exponential functions might fit a scatterplot that curves upward.

Front

What is the purpose of collecting bivariate quantitative data?

Back

To analyze the relationship between two quantitative variables.

Front

What is a linear model?

Back

A linear model is a mathematical representation of the relationship between two variables using a straight line.

Front

What does it mean if a linear model is a poor fit?

Back

It means that the data points do not closely follow a straight line, indicating a weak correlation.