In Exercises 78, use the following matrices and find an elementary matrix E that satisfies the stated equation. A = 341 2 7 1 815 , B = 815 2 7 1 341 C = 341 2 7 1 2 7 3 , D = 8 15 6 21 3 3 41 F = 815 811 341 (a) EA = B (b) EB = A (c) EA = C (d) EC = A

Chapter 3: Numeral Summary Measure Measure of Center Sample Mean (Average= x ) Adding all the numbers then dividing them by the Total (n) Sample Median (Middle value= x ) Sorting numbers from smallest to largest If two numbers are left in the middle, add the two then divide by 2 Sample Mode (M) Data value occurring most often; Showing up...