Welcome to the VassarStats website, which I hope you will find to be a useful and user-friendly tool for performing statistical computation. Each of the links in white text in the panel on the left …

The logic and computational details of two-sample t-tests are described in Chapters 9-12 of the online text Concepts & Applications of Inferential Statistics. For the independent-samples t …

Procedure: Initial Setup:T Enter the number of samples in your analysis (2, 3, 4, or 5) into the designated text field, then click the «Setup» button for either Independent Samples or …

For values of df between 1 and 20, inclusive, this section will calculate the proportion of the relevant sampling distribution that falls to the right of a particular value of chi-square. To …

This page will calculate the basic summary statistics for a sample of n values of X.

It is a companion site of « VassarStats: Web Site for Statistical Computation». The materials on this site may be freely used for any non-commercial educational purpose.

Rank Order Correlation. As the page opens, you will be prompted to enter the number of items for which there are paired rankings. If you are starting out with raw (unranked) data, the …

Procedure T Enter the values of X and Y into the cells of the designated columns, beginning in the top-most cell of each column. After each entry, depressing the 'tab' key will take you down to …

This unit will calculate the lower and upper limits of the 95% confidence interval for a proportion, according to two methods described by Robert Newcombe, both derived from a procedure …

Importing Data via Copy & Paste:T When importing data from a spreadsheet, the paired values of X and Y must be in the form of two adjacent columns. Within the spreadsheet application, …