Scatter Plots and Line 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 the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend of the data points in a scatter plot, indicating the general direction of the relationship between the variables.

Front

How do you determine if a line is an accurate line of best fit?

Back

A line is an accurate line of best fit if it minimizes the distance between itself and all the data points, ideally passing through the center of the data distribution.

Front

What is a positive association in a scatter plot?

Back

A positive association occurs when, as one variable increases, the other variable also tends to increase, resulting in an upward trend in the scatter plot.

Front

What is a negative association in a scatter plot?

Back

A negative association occurs when, as one variable increases, the other variable tends to decrease, resulting in a downward trend in the scatter plot.

Front

What does it mean if there is no association between two variables in a scatter plot?

Back

No association means that there is no discernible pattern or relationship between the two variables; the data points are scattered randomly.

Front

What is the equation of a line in slope-intercept form?

Back

Front

How can you find the slope of a line of best fit?

Back

Front

What does the y-intercept represent in a line of best fit?

Back

The y-intercept represents the value of the dependent variable when the independent variable is zero.

Front

What is the purpose of using a line of best fit?

Back

The purpose of using a line of best fit is to make predictions about one variable based on the value of another variable.