Measures of Variation. (Note: Express your nal answer using two decimal places if needed) 1. Cell phone radiation 1.181.411.49 1.04 1.45 0.74 0.89 1.42 1.45 0.51 1.38 21) Find the Range, Variance, and Standard Deviation. 2.For the following frequency distribution. Find the Mean, Variance and Standard Deviation