Secondary Catalogue

Series: Analysing Data


Box-And-Whisker Plots

Box-And-Whisker Plots

In this video we'll define box-and-whisker plots, also called box plots, which are another visual way to represent a data set. Box plots are particularly good at displaying the five-number summary for the data, which includes the minimum and...Show More
Changing the Data and Outliers

Changing the Data and Outliers

In this video we'll look at how adding outliers to the data set or removing outliers from the data set affect the measures of central tendency and spread of the data.
Measures of Central Tendency

Measures of Central Tendency

Mean, median, and mode are all measures of central tendency, which means that they all measure the idea of the center point of a data set. They all define the center point in a slightly different way.
Measures of Spread

Measures of Spread

Range and interquartile range (IQR) are both measures of spread, also called measures of dispersion or scatter. They measure how much the data is spread out around the center point of the data set.