scatter plots and trend lines

Front

What is a scatter plot?

Back

A scatter plot is a graphical representation of two variables where each point represents an observation. It helps to visualize the relationship between the variables.

Front

What does a positive association in a scatter plot indicate?

Back

A positive association indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative association in a scatter plot indicate?

Back

A negative association indicates that as one variable increases, the other variable tends to decrease.

Front

What is a linear association in a scatter plot?

Back

A linear association means that the relationship between the two variables can be represented by a straight line.

Front

What is a nonlinear association in a scatter plot?

Back

A nonlinear association means that the relationship between the two variables cannot be accurately represented by a straight line.

Front

What does 'no association' mean in the context of a scatter plot?

Back

'No association' means that there is no discernible relationship between the two variables; changes in one variable do not affect the other.

Front

How can you determine the rate of change from a scatter plot?

Back

The rate of change can be determined by calculating the slope of the trend line that best fits the data points.

Front

What is a trend line?

Back

A trend line is a line that is drawn on a scatter plot to represent the general direction of the data points.

Front

What are the different methods to find the rate of change?

Back

Methods to find the rate of change include calculating the slope of a line, using rise over run, and analyzing the change in y-values over the change in x-values.

Front

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

Back

Scatter plots are used to identify relationships, trends, and patterns between two quantitative variables.