Please help me solve for the z-score, skewness, and kurtosis

FOR THIS PRACTICE, FOR THE SAKE OF EASE, ROUND OFF THE MEAN TO A WHOLE NUMBER. ROUND EVERY OTHER STEP TO TWO (2) DECIMAL PLACES. X ( Raw Score) X - X X-52 Z Score 98 27.6 86 15.6 243.36 72 1.6 2.56 56 -144 207 36 40 30.4 924.16 Sum - 352 2139.2 Mean - 70 Sum of this column -- Sum of X -X Median -72 Formula for Standard Deviation; n = number of scores, x = the Mean for this and all formulae below: EX-XF 23.13 Find the Standard Deviation for the scores above Formula for Z scores; s = Standard Deviation (what you calculated with first formula) Z =. Formula for Skewness, M - median score Find the Skewness for the scores in the chart Formula for Kurtosis K - - -3 Find the Kurtosis for the scores in the chart