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 x-axis represent in a scatter plot?

Back

The x-axis typically represents the independent variable, which is the variable that is manipulated or changed.

Front

What does the y-axis represent in a scatter plot?

Back

The y-axis typically represents the dependent variable, which is the variable that is measured or observed.

Front

What is a positive correlation in a scatter plot?

Back

A positive correlation occurs when an increase in one variable corresponds to an increase in another variable, resulting in an upward trend in the scatter plot.

Front

What is a negative correlation in a scatter plot?

Back

A negative correlation occurs when an increase in one variable corresponds to a decrease in another variable, resulting in a downward trend in the scatter plot.

Front

What does no correlation mean in a scatter plot?

Back

No correlation means that there is no discernible relationship between the two variables, and the data points are scattered randomly.

Front

What is the purpose of a trend line in a scatter plot?

Back

A trend line is used to summarize the relationship between the variables and can help predict future values.

Front

How can you determine the strength of a correlation in a scatter plot?

Back

The strength of a correlation can be determined by how closely the data points cluster around the trend line; a tighter cluster indicates a stronger correlation.

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that significantly differs from the other observations in the dataset, which can affect the overall correlation.

Front

How do you interpret a scatter plot with a positive correlation?

Back

In a scatter plot with a positive correlation, as one variable increases, the other variable also tends to increase.