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Statistics Lectures - 5 (Variance & Percentiles)


A series of free Statistics Lectures & solutions in videos.

These lectures cover the concepts of variance, standard deviation, quartiles, percentiles, interquartile range and discuss the effects of outliers.

Variance, standard deviation and interquartile range are measures of dispersion, giving a idea of how the data is spread out.

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This is the fifth page of the series of free video lessons, "Statistics Lectures".

Statistics - Lecture 11

Variance and Standard Deviation of a Population

Statistics - Lecture 12

Variance and Standard Deviation of a Sample

Statistics - Lecture 13

Percentiles and Quartiles

Statistics - Lecture 14

The Five Number Summary, Interquartile Range (IQR), and Boxplots

Statistics - Lecture 15

The Effects of Outliers

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget which allows your to practice solving Algebra, Trigonometry, Calculus and other math topics.

You can use the Mathway widget below to practice Statistics or other math topics. Try the given examples, or type in your own problem. Then click "Answer" to check your answer.

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