You may recall the formula for calculating skewed deviation skewness

[OPTIONAL READING]ill get the sum of the deviation^3 and divide through by ns^3. So the sum of the deviations cubed is 5,286,216,555

divide through by NS in this case 6 * 4263.17^3 = 4.648889288 e 11

5,286,216,555/ 4.648889288 e 11 = cubed skewness of 6.826398755 e 19 which is unfortunately the same incorrect answer I arrived at before.

[PROBLEM]Just to clarify here 5,286,216,555/6 * 4263.17^3 is all that needs to be solved for however 6.826398755 e 19 is not the correct answer and that's what my ti-83 keeps on giving me.

Here was my instructors reply

Your ns^3 is incorrect. Make sure you do s^3 first then multiply that by n (6); if in Excel it is easy to screw this up. I worked it through and got a very reasonable answer.

Good luck,

Could some one please tell me what the correct answer is, and what I did wrong so I can correctly solve it? Thanks!