Descriptive Statistics: Mean, Median, Mode, Variance, SD, Skewness, Kurtosis, Outliers & Data Summary

Octiles - Complete Guide

Feb 9, 2026
STATISTICS

Octiles Overview Octiles divide a dataset into 8 equal parts, with 7 dividing points: O₁, O₂, …, O₇. Each octile...

3 min Read

Outlier Detection and Analysis - Complete Guide

Feb 9, 2026
STATISTICS

Outliers Overview Outliers are data points that deviate significantly from the typical pattern of a dataset. They can result from:...

5 min Read

Percentiles - Complete Guide

Feb 9, 2026
STATISTICS

Percentiles Overview Percentiles divide data into 100 equal parts. The i-th percentile is the value below which i% of the...

4 min Read

Quartile Deviation - Complete Guide

Feb 9, 2026
STATISTICS

Quartile deviation (also called semi-interquartile range) is half the interquartile range. It represents the average distance from the quartiles to...

1 min Read

Quartiles - Complete Guide

Feb 9, 2026
STATISTICS

Quartiles Overview Quartiles are values that divide an arranged dataset into four equal parts. They consist of three values: Q₁...

5 min Read

Skewness - Complete Guide

Feb 9, 2026
STATISTICS

Skewness Overview Skewness measures the asymmetry of a distribution. It indicates whether data is symmetrically distributed or skewed toward one...

5 min Read

Summary Statistics - Complete Guide

Feb 9, 2026
STATISTICS

Summary Statistics Overview Summary statistics provide a comprehensive overview of a dataset by summarizing key characteristics in a few meaningful...

4 min Read

Variance and Standard Deviation - Complete Guide

Feb 9, 2026
STATISTICS

Variance and standard deviation measure how spread out data is around the mean. Variance is measured in squared units, while...

2 min Read