Visualize imported data

It's important to check your imported data is reasonable. A plot is a quick and easy way to spot oddities. In this exercise, you will use the plot() function to visualize some AAPL data from Yahoo Finance.

A stock split caused a huge price change in June 2014. Apple simultaneously increased the number of shares outstanding and decreased its stock price, leaving the company value unchanged. For example, a 2-for-1 split would double the shares outstanding, and reduce the stock price by 1/2.

You will also use the quantmod extractor functions Cl() and Ad() to access the close and adjusted close columns, respectively. Yahoo Finance provides the split- and/or dividend-adjusted close column. You will learn more about the adjustment process in the next video.

AAPL is available in your workspace - consisting of Apple stock data (imported from Yahoo Finance) from January 2007 through September 15, 2017.

Look at the tail() of AAPL.
Plot the AAPL close price.
Plot the AAPL adjusted close price.

Take Hint (-30 XP)

Exercise

Visualize imported data

Instructions