Tag Archives: R tutorials

Beginners Guide to R – R Quantile-Quantile (QQ) Plot – Base Graph

Hits: 300 R Quantile-Quantile (QQ) Plot – Base Graph Sometimes it’s important to know whether the data is normally distributed. A quantile-quantile plot (QQ plot) is a good first check. It shows the distribution of the data against the expected normal distribution. If the data is normally distributed, the points fall on the 45° reference …