The bar graph shows the results when a die was thrown a number of times. How many sixes were thrown?

The horizontal axis represents the score and the vertical axis represents the number of times the die is thrown. So as we can see the score 6 (represented by the purple histogram) was got, when the dice was thrown 3 times.
I found an answer from stackoverflow.com
Rolling 2 dice 1000 times and counting the number of times the sum ...
Feb 21, 2020 ... You can also easily illustrate the results with a plot: import matplotlib.pyplot as plt plt.bar(results.keys(), results.values()) plt.show().
For more information, see Rolling 2 dice 1000 times and counting the number of times the sum ...
I found an answer from en.wikipedia.org
Law of large numbers - Wikipedia
In probability theory, the law of large numbers (LLN) is a theorem that describes the result of performing the same experiment a large number of times.
For more information, see Law of large numbers - Wikipedia