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Descriptive Statistics

From Grapheme wiki

Overview

Descriptive Statistics are statistical descriptive coefficients used to summarizes a given sample of data. They help to describe the features of a specific data set by providing condensed quantitative information, easy to manage and easy to understand.

Commonly used descriptive statistics include measures of central tendency and measures of dispersion. The first group attempts to describe a set of data by using measures of central location as the mean or the median while the second focuses on evaluating how dispersed a data sample is via measures like Variance, Standard deviation and interquartile range.

Descriptive statistics data are usually presented along with a set of charts that aim at helping to understand the distribution and the dispersion of the data points. The most commonly used charts for a descriptive statistics analysis are Histograms and individual charts.

More details on Descriptive Statistics can be found here:


Within Grapheme

To perform a Descriptive Statistic Analysis in Grapheme, click on Create New Analysis from the toolbar of the Statistical Analysis View. Assign a name to the panel and select Descriptive Analysis from the list. Click on Next.

Select the Source Table from the ones available in the Tables view, select the view of the table and the column containing the sample you want to analyse. Click on Next.

Select Perform Advanced Descriptive Analysis if you want to evaluate advanced statistics as Kurtosis, Skewness, Median, First and Third Median. Click on Finish.


Grapheme: Descriptive Statistics Panel
Remarks
  • All the data available in the panel are updated on the fly, so that any change in the table values, is immediately reflected by the panel tables and charts. Automatic update can be temporary suspended, by clicking on the lock button in the main panel toolbar.
  • All the data contained in each table, can be copied to the clipboard for further reporting by clicking on the button available in the toolbar.
  • Each chart can be exported as Image by clicking on the “Save as Image” button available in the toolbar


See also