4:45 Statistics - How to find outliers
Clear walkthrough of spotting outliers using the 1.5 x IQR rule above Q3 or below Q1.
Identify outliers and their understand impact
Identify outliers and their understand impact
5 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.
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5 shown 4:45 
4:33 The Effects of Outliers on Spread and Centre (1.5)
Shows how an outlier affects spread and the mean, median and mode - the impact focus.
2:38 Determining an Outlier Using the 1.5 IQR Rule
Quick, focused demo of testing whether a value is an outlier with the 1.5 IQR rule.
3:53 What Are And How To Calculate Quartiles, The Interquartile Range, IQR, And Outliers Explained
Builds quartiles and IQR then uses them to flag possible outliers, with chapters.
12:33 How To Find The Interquartile Range & any Outliers - Descriptive Statistics
Thorough worked examples of finding the IQR and identifying any outliers in a data set.