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 a positive correlation indicate in a scatter plot?

Back

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

Front

What does a negative correlation indicate in a scatter plot?

Back

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

Front

What does no correlation mean in a scatter plot?

Back

No correlation means there is no apparent relationship between the two variables.

Front

How can you identify the trend in a scatter plot?

Back

You can identify the trend by observing the direction of the data points; if they rise together, it's positive; if one rises while the other falls, it's negative.

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

How can you use a scatter plot to make predictions?

Back

You can use a scatter plot to make predictions by extending the trend line to estimate values for variables not directly measured.

Front

What is the purpose of using scatter plots in data analysis?

Back

The purpose of using scatter plots is to visually represent relationships between variables and identify patterns or trends.

Front

What does it mean if a scatter plot has a nonlinear association?

Back

A nonlinear association means that the relationship between the variables does not follow a straight line, indicating a more complex relationship.

Front

How do you interpret the slope of a trend line in a scatter plot?

Back

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