In Exercises, find the range, variance, and

Answer :

Step 1 of 1 :

Given Cell Phone Radiation Listed below are the measured radiation emissions (in W/kg) corresponding to these cell phones: Samsung SGH-tss 9, Blackberry Storm, Blackberry Curve, Motorola Moto, T-Mobile Sidekick, Sanyo Katana Eclipse, Palm Pre, Sony Ericsson, Nokia 6085, Apple iPhone 3G S, and Kyocera Neo El 100.

The data are from the Environmental Working Group.

0.38 , 0.55 , 1.54 , 0.50 , 0.60 , 0.92 , 0.96 , 1.00 , 0.86 , 1.46

Now we have to find the range, variance, and standard deviation for the given sample data.

The range is a simple measure of variation in a set of random variables. It is difference between the biggest and smallest random variable.

Range = Maximum value - Minimum value

Given data

0.38 , 0.55 , 1.54 , 1.55 , 0.50 , 0.60 , 0.92 , 0.96 , 1.00 , 0.86 , 1.46

Range = Maximum value - Minimum value

Range = 1.55 - 0.38

Range = 1.17

Therefore