A series of free Statistics Lectures with lessons, examples & solutions in videos.
This is the fifth page of the series of free video lessons, “Statistics Lectures”. 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.
A percentile is a value below which a certain percentage of observations lie.
The five number summary is a method of summarizing a distribution of data:
A look at how outliers may affect central tendency and variance.
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