# How do you use Mahalanobis in SPSS?

## How do you use Mahalanobis in SPSS?

Example: Mahalanobis Distance in SPSS

1. Step 1: Select the linear regression option.
2. Step 2: Select the Mahalanobis option.
3. Step 3: Calculate the p-values of each Mahalanobis distance.
4. 1 – CDF.CHISQ(MAH_1, 3)
5. Step 4: Interpret the p-values.
6. Make sure the outlier is not the result of a data entry error.
7. Remove the outlier.

What is a Mahalanobis test?

Mahalanobis distance is an effective multivariate distance metric that measures the distance between a point and a distribution. It is an extremely useful metric having, excellent applications in multivariate anomaly detection, classification on highly imbalanced datasets and one-class classification.

What is outliers in SPSS?

cally, SPSS identifies outliers as cases. that fall more than 1.5 box lengths from. the lower or upper hinge of the box. The box length is sometimes called the. “hspread” and is defined as the distance.

### What is the difference between Mahalanobis distance and Euclidean distance?

What is the Mahalanobis distance? The Mahalanobis distance (MD) is the distance between two points in multivariate space. In a regular Euclidean space, variables (e.g. x, y, z) are represented by axes drawn at right angles to each other; The distance between any two points can be measured with a ruler.

How do I remove outliers in SPSS?

How to Remove Outliers in SPSS

1. Click on “Analyze.” Select “Descriptive Statistics” followed by “Explore.”
2. Drag and drop the columns containing the dependent variable data into the box labeled “Dependent List.” Click “OK.”

What is a good Mahalanobis distance?

A Mahalanobis Distance of 1 or lower shows that the point is right among the benchmark points. This is going to be a good one.

## How do you tell if there are outliers in SPSS?

To check for outliers in SPSS:

1. Analyze > Descriptive Statistics > Explore…
2. Select variable (items) > move to Dependent box.
3. Click Statistics… >
4. In Output window: Go to Boxplot > Look at circles and *.
5. If there are circles or *, then there are potential outliers in your dataset.

How do you treat outliers in SPSS?

There are no specific commands in SPSS to remove outliers from analysis or the Active DataSet, you fill first have to find out what observations are outliers and then remove them using case selection Select cases . Make sure to understand that you can select observations.