BIU- . 2 . A Format as Table . Delete . [ Cell Styles . Hi Format - Sensitivity Clipboard Font Alignment Number Styles Cells Editing Sensitivity C7 X V 8 A B C D F G H K 2 Compute for the group standard deviation and variance. Use the following formulas: 3 a. VEni(mi-H)2 / (N-1) 4 b. + s = ivef(d') - (Efd')? UT 6 a. X b. X Requirements: 80-84 8 80-84 8 1 Complete table elements 8 75-79 12 75-79 12 2 Complete computation 9 70-74 16 70-74 16 3 Sd 10 65-69 13 65-69 13 4 Variance 11 60-64 9 60-64 9 12 55-59 11 Use of Excel allowed for tables 13 Hand written output allowed 14 Activity Answer SD and Variance4 Sd Activity Average: 11.5 Count 6 Sum 169 Ready