After an assignment, I sampled 3 students' scores. The sampled scores are

72, 80, and 88

Using a pencil, paper, and calculator, by hand, find the SAMPLE standard deviation of the scores. Show ALL of your work. Use the video in the text as a guide. Note: The sample standard deviation is 8. I'm more interested in your work than the answer.

After you are done, take a picture of your work and upload the image to receive credit for this problem. Make sure that your work is readable in the picture.

Microsoft Whiteboard 2 , 4 , 6 8 . X . . . 0 = 2.2 hrs X - M ) o Tc N Pop. S+ . Dev M = 2+4+6+8 S = 2 X X - MJ ( X - M ) 2 4 : 5 2 2-5 = - 3 ( - 3 ) :9 4 4 - 5 : ( - 1 ) :1 X- x 4 + 8+6. 18 = 6 X 3 6 6-5 =1 8 4- 6 :- 2 -x 3 8 8 - 5 :3 3 :9 COM 8 8- 6:2 EX - M) 2 20 A 6 6- 6-0 0 D Sample E ( x- x) 8 st. dev = E ( x- x ) 2 4 = 2 U n-1 3 -1 F Type here to search O 8:17/8:43 73'F ~ 40 5:30 PM 9/14/2021