Scatterplot Review

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 a positive correlation in a scatterplot indicate?

Back

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

Front

What does a negative correlation in a scatterplot indicate?

Back

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

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that is significantly different from the other points in the dataset, often lying far away from the trend.

Front

What is the purpose of a line of best fit?

Back

The line of best fit is used to summarize the relationship between variables and to make predictions based on the data.

Front

How do you identify the coordinates of an outlier?

Back

The coordinates of an outlier can be identified by looking for a point that does not follow the general trend of the other points.

Front

What is the equation of a line in slope-intercept form?

Back

Front

What does the slope of a line represent in a scatterplot?

Back

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

Front

What is the y-intercept in a scatterplot?

Back

The y-intercept is the point where the line crosses the y-axis, indicating the value of y when x is zero.

Front

How can you determine the strength of a correlation from a scatterplot?

Back

The strength of a correlation can be determined by how closely the data points cluster around the line of best fit; tighter clusters indicate stronger correlations.