Scatterplot 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 axis.

Front

What does a trend line represent in a scatterplot?

Back

A trend line represents the general direction or pattern of the data points in a scatterplot, indicating the relationship between the variables.

Front

How do you determine the slope of a trend line?

Back

The slope of a trend line is determined by the change in the y-value divided by the change in the x-value (rise over run).

Front

What does a positive slope indicate in a scatterplot?

Back

A positive slope indicates that as one variable increases, the other variable also increases.

Front

What does a negative slope indicate in a scatterplot?

Back

A negative slope indicates that as one variable increases, the other variable decreases.

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatterplot, minimizing the distance between the line and all data points.

Front

How can you use a scatterplot to make predictions?

Back

You can use a scatterplot to make predictions by extending the trend line to estimate values for one variable based on known values of the other variable.

Front

What does it mean if data points are closely clustered around the trend line?

Back

If data points are closely clustered around the trend line, it indicates a strong correlation between the two variables.

Front

What does it mean if data points are widely scattered around the trend line?

Back

If data points are widely scattered around the trend line, it indicates a weak correlation between the two variables.

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.