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$0.75 Variance/Standard Deviation? -36/

• From Mathematics: General-Mathematics
• Closed, but you can still post tutorials
• Due on Jul. 13, 2009
• Asked on Jul 10, 2009 at 4:05:44PM

Q:

A sample of the rate of return for a group of investment companies showed the following returns: 10.6%; 12.6%; 14.8%; 18.2%; 12.0%; 14.8%; 12.2%; 15.6%
a. What is the variance of the data?
b. What is the approximate standard deviation of the data?

 

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