Our stacked bar chart titled Earthquake Count by Year and Magnitude combines the analysis from the scatter plot and the histogram and brings it together into a single visualization.
This chart showcases the number of earthquakes throughout the time period under study (1600 - 2020) according to each of the Richter Scale magnitude classes while also counting each of those occurrences.
The magnitude is a number that characterizes the relative size of an earthquake.
The depth of focus or focal depth refers to how deep within the earth an earthquake occurs.
The earthquake count goes back as far 1600; however, it was noted that data was limited prior to 1900.