What you’ll learn to do: construct a histogram, a frequency polygon and a time series graph

How has the percentage of people who use social media changed over time? To answer a question like this, we would need to look for a trend in a large data set. A time series graph with years and social media usage data could be used to see the trend. Histograms and frequency polygons are other graphs that help to display large sets of data and see which values are more common and which values are less common.