Can someone help explain this for a stock project I'm working on in business class?

I'm doing a presentation in my business management class. My group chose toyota and because I have an interest in stocks and finance, I thought I'd pick that. Part of my subject being stocks i'm being asked to provide a graph of the last 10 years of the performance fo the stock and compare it to one of the market index. The problem is, I don't know what a market index is or what one even looks like and when i google it i just get extremely confused. SO, i'm hoping that the community of reddit might be able to help shed some light on this for me? Just to explain what a market index is and how to build a visualization of one.

Submitted November 21, 2017 at 05:05AM by RoyalSlop http://ift.tt/2zZYgyp