Summary Statistics Calculator

Cronbach’s Alpha is a way to measure the internal consistency of a survey or questionnaire. Cronbach’s Alpha ranges between 0 and 1,…

This calculator creates a covariance matrix for up to five different variables. Simply enter the data values for up to five variables…

This calculator creates a correlation matrix for up to five different variables. Simply enter the data values for up to five variables…

The 90th percentile of a dataset is the value that cuts off the first 90 percent of the data values when all…

The semi-interquartile range is a way to measure the spread of observations in a dataset. It is calculated as one half the…

Cumulative frequency is a measure of the total frequencies up to a certain point in a list of data values. To calculate…

The median absolute deviation, often abbreviated MAD, measures the spread of observations in a dataset. It is calculated as: MAD = median(|xi…

In a frequency distribution, class width refers to the difference between the upper and lower boundaries of any class or category. It…

We can normalize values in a dataset by subtracting the mean and then dividing by the standard deviation. This is also known…

A frequency table is a table that shows how many times certain values occur in a dataset. A relative frequency table is…