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# How to Create and Interpret Scatterplots in SPSS

AÂ scatterplotÂ is a type of plot that we can use to display the relationship between two variables. It helps us visualize both the direction (positive or negative) and the strength (weak, moderate, strong) of the relationship between the two variables.

This tutorial explains how to create and interpret scatterplots in SPSS.

## How to Create Scatterplots in SPSS

Suppose we have the following dataset that displays the hours studied and exam score received for 15 students:

We can create a scatterplot to visualize the relationship between hours studied and exam score received.

### Basic Scatterplot

We can create a basic scatterplot in SPSS by clicking on theÂ Graphs tab, thenÂ Chart Builder:

In the window that pops up, clickÂ Scatter/DotÂ in theÂ Choose from:Â list. Then drag the first option that saysÂ Simple ScatterÂ into the editing window. Drag the variableÂ hoursÂ into the x-axis andÂ scoreÂ into the y-axis:

Once you clickÂ OK, the following scatterplot will appear:

By default, SPSS chooses a minimum point for the y-axis based on the smallest value in your dataset. In this example the minimum point on the y-axis is 65. To change this to 0, clickÂ Y-Axis1 (Point1)Â in theÂ Element PropertiesÂ box and set the MinimumÂ value to 0:

Once you clickÂ OK, a new scatterplot will appear with the y-axis minimum value set to 0:

### Scatterplot with Regression Line

We can also produce a scatterplot with a line of best fit by selecting the option calledÂ Simple Scatter with Fit LineÂ in theÂ Chart Builder window:

Once we clickÂ OK, a scatterplot with a line of best fit will appear:

The R2 value also appears in the top right hand corner of the plot. This represents the percentage of variation in the response variable that can be explained by the predictor variable. In this case, it means 66.2% of the variation in exam scores can be explained by the number of hours spent studying.

### Grouped Scatterplot

Suppose we also have a categorical variable in our dataset, such as gender:

In this case, we could create a scatterplot of hours studied vs. exam score,Â grouped by gender.

To do so, we can once again open the Chart Builder and chooseÂ Grouped ScatterÂ as the chart type. Once again weâ€™ll place the variableÂ hoursÂ on the x-axis andÂ scoreÂ on the y-axis, but this time weâ€™ll addÂ genderÂ as the variable underÂ Set color:

Once we clickÂ OK, the following grouped scatterplot appears:

The red circles represent males and the blue circles represent females.