can you check my work using these formulas

mean,range, s,s2

You have scores from 15 cases/states (no grouped scores or frequency distribution) so you are using the individual score formulae: X = (X1) $ 2 = [( X 1 -x ) 2 N E( X 1 - x) 2 N S = N X (X- X) ( X - X ) 2 24, 70 - 5.83 33,99 24. 70 - 5,83 33. 9 9 25.30 - 4.73 22137 26. 50 - 4.03 1624 106. 59 26, 60 - 3.93 15, 44 27, 30 - 3, 23 10. 43 29. 70 - 0.83 169 29. 80 0 . 73 .53 133. 4 0 1.27 1. 61 32.50 1. 97 3. 8 8 32, 70 2.17 4. 71 32 70 217 4.71 33.160 3. 07 9. 42 / 15 Pool 37, 40 6187 1 7. 20 42,10 11. 57 133.860 3 39 07 Mean = X = ExJ 457,9 2 339. 07 15- 30. 53 h = 15 457 SX1 = 457,9 Range 74. 40 20/2,10 17.70 24.70 52 - 2 ( x1 - X) 2- 339,07 = 22. 60 15 IS X , - x ) 2 339 , 07 12 2,60 4. 75 15