steps to making a histogram first make a table

Note that the starting point for the first interval is 0, which is very close to the minimum observation of 1 in our dataset.

Width of intervals = Range / (Number of intervals) = 90/10 = 9īased on this information, the frequency table would look like this: Intervals (bins).

Range = maximum value – minimum value = 91 – 1 = 90.

Recall that our dataset contained the following 100 observations: Age These formulas can then be used to create the frequency table followed by the histogram.

Width of intervals = Range / (Number of intervals).

Originally, you set the number of bins to 10 for simplicity.Īlternatively, you may derive the bins using the following formulas: Once you run the code in Python, you’ll get the following skew: 0.4575278444409153Īdditional way to determine the number of bins Optionally, you can derive the skew in Python using the scipy library as follows: from scipy.stats import skew Run the code, and you’ll get the styled histogram. One way to style your histogram is by adding this syntax towards the end of the code: ('ggplot') If needed, you can further style your histogram. Run the code, and you’ll get the histogram. Step 4: Plot the histogram in Python using matplotlibįinally, plot the histogram based on the following template: import matplotlib.pyplot as pltįor our example: import matplotlib.pyplot as plt At the end of this guide, you’ll see another way to derive the bins.

Next, determine the number of bins to be used for the histogram.įor simplicity, set the number of bins to 10.

Later you’ll see how to plot the histogram based on the above data. Step 2: Collect the data for the histogramįor example, let’s say that you have the following data about the age of 100 individuals: Age You may refer to the following guide for the instructions to install a package in Python. If you haven’t already done so, install the Matplotlib package using the following command (under Windows): pip install matplotlib Steps to plot a histogram in Python using Matplotlib Step 1: Install the Matplotlib package Next, you’ll see the full steps to plot a histogram in Python using a simple example. You may use the following template to plot a histogram in Python using Matplotlib: import matplotlib.pyplot as plt

Steps to making a histogram first make a table