What do these numbers tell us

“What do these numbers tell us?”

Below is the entire question, I just need help with answering “What do these numbers tell us?” and “Are these numbers a good measure of a company performance? If so, why?”  The answer doesn’t have to be of great length, doesn’t have to be an essay, just need a knowledgeable and insightful answer.  Thank you.

How is earnings per share (EPS) calculated? Why do we calculate diluted EPS? How is EPS used in the price/earnings ratio? Please visit www.yahoofinance.com and research Apple (AAPL) and examine its EPS and P/E ratio. What do these numbers tell us?

Are these numbers a good measure of company performance? If so, why?

Are these numbers a good measure of company performance? If so, why?