The distribution of numerical data that is accurately represented in a statistical format is called a histogram. It is basically a graphical plot, like we saw in our machine learning outputs in Chapter 10, Accelerated Machine Learning on GPUs. Histograms can be used to assess a number of parameters and estimations across diverse disciplines. Remember Karl Pearson's correlation coefficient? It was he who first introduced this concept:
By Daniel Penfield – own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9401898
The preceding diagram is an example of a histogram.
