Statistics Toolbox

Background Comparison

Introduction

This module compares the distributions of two data sets to determine if one is significantly elevated over the other. This problem typically arises when comparing a potentially contaminated site to background levels. Multiple sites may be compared to a single background data set. Subsets of the data may be obtained by using the panel and group variables. However, only one panel subset and one group subset can be analyzed at a time.

Data Upload Required

This tool requires a dataset for analysis. Please upload a dataset using the interface below, or upload one of the example datasets using the Input Data menu at left.

File Upload

Upload a dataset

  • StatDataML - XML based data exchange format [*.sdml]
  • ESRI shape file - ESRI shape files can be uploaded [*.shp]
  • Text tab delimited - Data should be in uninterrupted rows and columns with fields separated by a tab and field or column names in the first row. [*.everything else]
  • Note: File size is limited to approximately 1 MB. Attempts to load larger files may result in an error.

Enter the path and file name below or browse your computer for a file.