Scatter Plots

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional grid.

Front

What do the points on a scatter plot represent?

Back

The points on a scatter plot represent individual data points, with one variable plotted along the x-axis and the other along the y-axis.

Front

How can you determine the correlation from a scatter plot?

Back

You can determine the correlation by observing the pattern of the points: a positive correlation shows points rising from left to right, a negative correlation shows points falling from left to right, and no correlation shows a random pattern.

Front

What does a cluster of points in a scatter plot indicate?

Back

A cluster of points indicates that there is a concentration of data points in that area, suggesting a possible relationship between the variables.

Front

What does it mean if the points on a scatter plot are widely spread out?

Back

If the points are widely spread out, it indicates a weak or no correlation between the variables.

Front

What is the purpose of using a scatter plot?

Back

The purpose of using a scatter plot is to visually represent the relationship between two quantitative variables and to identify trends or patterns.

Front

What is a trend line in a scatter plot?

Back

A trend line is a straight line that best represents the data points in a scatter plot, showing the general direction of the data.

Front

What does it mean if a scatter plot has a strong positive correlation?

Back

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

Front

What does it mean if a scatter plot has a strong negative correlation?

Back

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

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that is significantly different from the other points in the scatter plot, which may indicate an anomaly or error in the data.