Scatter Plots

Front

What is a scatter plot?

Back

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

Front

What does the line of best fit represent in a scatter plot?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, indicating the trend of the data points.

Front

What is a positive correlation in a scatter plot?

Back

A positive correlation occurs when an increase in one variable leads to an increase in the other variable, resulting in an upward trend.

Front

What is a negative correlation in a scatter plot?

Back

A negative correlation occurs when an increase in one variable leads to a decrease in the other variable, resulting in a downward trend.

Front

What does it mean if there is no correlation in a scatter plot?

Back

No correlation means that there is no discernible relationship between the two variables; the data points do not show any trend.

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that differs significantly from other observations in the dataset, often lying far away from the line of best fit.

Front

How can you identify the line of best fit visually?

Back

The line of best fit can be identified as the line that minimizes the distance between itself and all the data points in the scatter plot.

Front

What does it mean if a scatter plot has a positive association with an outlier?

Back

It means that most data points show a positive trend, but there is one or more points that deviate significantly from this trend.

Front

How do you determine the value of a variable from a scatter plot?

Back

To determine the value of a variable, locate the corresponding point on the scatter plot and read the value from the axis.

Front

What is the purpose of using scatter plots in statistics?

Back

Scatter plots are used to visually represent the relationship between two variables, helping to identify trends, correlations, and outliers.