Scatterplots & Predictions

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 grid.

Front

What does it mean if a scatterplot shows a positive linear association?

Back

A positive linear association means that as one variable increases, the other variable also tends to increase.

Front

How can you use a scatterplot to make predictions?

Back

You can use a scatterplot to make predictions by identifying trends in the data and estimating values based on the observed relationship.

Front

What is the purpose of using a trend line in a scatterplot?

Back

A trend line helps to summarize the relationship between the variables and can be used to make predictions.

Front

What does it mean if there is no association in a scatterplot?

Back

No association means that there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

How do you interpret the slope of a trend line in a scatterplot?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a stronger relationship.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that differ significantly from other observations; they can affect the overall trend and predictions.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.

Front

How can you determine the strength of a relationship in a scatterplot?

Back

The strength of a relationship can be determined by how closely the data points cluster around the trend line.

Front

What is the role of the x-axis and y-axis in a scatterplot?

Back

The x-axis typically represents the independent variable, while the y-axis represents the dependent variable.