Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional plane.

Front

What does the x-axis represent in a scatterplot?

Back

The x-axis represents the independent variable or the domain of the data.

Front

What does the y-axis represent in a scatterplot?

Back

The y-axis represents the dependent variable or the range of the data.

Front

What is a trend line in a scatterplot?

Back

A trend line is a straight line that best represents the data points in a scatterplot, indicating the general direction of the data.

Front

What is correlation in the context of scatterplots?

Back

Correlation refers to the strength and direction of a relationship between two variables, which can be positive, negative, or none.

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that is significantly different from other observations, often lying far away from the main cluster of points.

Front

What does a positive correlation look like in a scatterplot?

Back

A positive correlation is indicated by a trend line that slopes upwards from left to right, showing that as one variable increases, the other also increases.

Front

What does a negative correlation look like in a scatterplot?

Back

A negative correlation is indicated by a trend line that slopes downwards from left to right, showing that as one variable increases, the other decreases.

Front

What is the correlation coefficient?

Back

The correlation coefficient, denoted as 'r', quantifies the degree of correlation between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no correlation between the two variables.