Find the variance of the weekly price changes of each

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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During a 5-week period in 2007, the stock of an insurance company and the stock of a small tech company showed the following weekly percentage changes.
Company                       Weekly Price Change (%)
Insurance Stock             0.3          1.8            0           0.        -1.5
Tech Stock                    0.3           -0.1          1.1          3.2         0.8

Find the variance of the weekly price changes of each. (Round your answers to four decimal places.) 
insurance stock=          
tech stock=

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