Scatter Plots

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

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

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

You can use the trend line to estimate the value of one variable based on the value of another variable by finding the corresponding point on the line.

The line of best fit is the line that minimizes the distance between itself and all the data points in a scatter plot.

It means that there is no clear linear relationship between the two variables being plotted.

The equation of the line of best fit can be determined using statistical methods such as linear regression.

The slope indicates the rate of change of the dependent variable with respect to the independent variable.

A slope of -25 indicates that for every unit increase in the independent variable, the dependent variable decreases by 25 units.

Scatter plots are used to visually assess the relationship between two variables and identify trends, patterns, or correlations.