This is a simple chart used for measuring events over time or in other words it is a series of statistical observations that are recorded over time. Visualizing your data this way would help you figure out how the data changes with respect to time in the past and you can also make predictions regarding the values that might occur in the future when time changes. Let's now see some sample Time Series charts in action.
Before giving examples of time series charts, let's understand the dataset used for the time series chart examples.
In this dataset, we have India's seasonal temperature captured on monthly/annual basis from 1901 to 2015. The dataset is downloaded as a JSON file from https://data.gov.in/catalog/all-india-seasonal-and-annual-mean-temperature-series. You can also find the sample dataset in the GitHub code accompanied with this book.