Scatter Plots & Lines of Best Fit

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 in a scatter plot indicate?

Back

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

Front

What does a negative correlation in a scatter plot indicate?

Back

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

Front

What is a line of best fit?

Back

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

Front

How can you determine if a trend line is a good fit for the data?

Back

A trend line is a good fit if it closely follows the pattern of the data points, with most points near the line.

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that significantly differs from the other points in the dataset, potentially skewing the results.

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; changes in one do not affect the other.

Front

How do you interpret the slope of a line of best fit?

Back

The slope indicates the rate of change between the two variables; a positive slope means an increase, while a negative slope means a decrease.

Front

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

Back

Scatter plots help visualize relationships between variables, identify trends, and detect outliers.

Front

What is the significance of the x-axis and y-axis in a scatter plot?

Back

The x-axis typically represents the independent variable, while the y-axis represents the dependent variable.