You can use several methods to calculate correlation in Excel. Understanding Correlation . The correlation coefficient ranges from -1 to 1. Exactly 1 is considered perfect.

Step 2: Calculate the 90-day correlation of Apple and S&P 500 by using the shorthand command in the spreadsheet. It won't matter whether Apple is the first or second array, just as long as the ...

Thus, if we calculate the correlation coefficient including this outlier, it would suggest a weaker correlation between the stock and the S&P 500 than actually exists on most trading days.

To find the correlation between two stocks, you’ll start by finding the average price for each one. Choose a time period, then add up each stock’s daily price for that time period and divide ...

The article How to Calculate Beta From Volatility and Correlation originally appeared on Fool.com. Try any of our Foolish newsletter services free for 30 days .

These numbers range from -1 to +1, with zero describing no correlation at all. A beta coefficient of 1 means that a stock tends to move with the overall market.

A correlation coefficient of 1.0 is a perfectly positive relationship. A 0.8 is fairly strong, a 0.6 is moderately positive, and a Blutarsky-like 0.0 indicates no relationship at all.

The article How to Calculate Beta From Volatility and Correlation originally appeared on Fool.com. Try any of our Foolish newsletter services free for 30 days .