Chapter 4 Missing values

4.1 Visualizing missing data points

Our project, the analysis of stock market data gathers data files from Bloomberg and Yahoo Finance. These are parts of highly processed and regularly maintained financial data on which thousands of people’s personal financing decisions rely. Therefore, there are no missing values found on these data sets.

In the first section, I will use some historic stock data and run the missing plots function to check if there is any missing data.

4.2 Checking for Missing Values of stocks of Apple and Pfizer

For the analysis below, we imported 3 years of stock data for AAPL and PFE.

The output from these plots show us that the data we will be using for our analysis does not contain any missing values.

Hence, we would be ending this section here prematurely, since there are no missing data points to analyse.