How do I find the standard deviation?

11) 6 points decimal place. Find the population variance and standard deviation for the following population. Round the answers to at least one 18 5 19 10 2 Do not use special features on TI- 84 calculator. Use formulas 62 - 2 ( x - 1) 2 N 0=VO2 Ce 01t-00 091 And show all your steps for the credit population variance . 5+ 10 + 18+ 19+ 25 77, 5 = 15.4 5 X xwu ( x - 4 ) 2 2 S 5- 15.4 = -10.4 ( - 10.4 ) 2 = 108.16 10 10- 15. 4 = -5.4 ( - 5.4 ) 2 = 29. 16 18 18 - 15. 4 = 2.6 ( 2 . 6 ) 2 = 6.76 19 19 - 15. 4 = 3.6 ( 3 . 6) 2 = 12.96 25 25 - 15. 4 = 9.6 (9 . 6 ) 2 = 92.16 [ ( x - U ) 2 = 249.2 @ = 249.2 5 = 49. 84 population variance: 49. 84 12