need help on my study guide please

A variable X denoting differential percentage of sales of a product fluctuates year-by-year due to exogenous market factors as given below. Further, suppose X (in %)=[X0+(X)]% with X0=50% and X as tabulated above denotes a RV with sample-sizes represented by n for each year as listed below: (i) Find, AM, HM and GM of the RV: X (ii) Decide the appropriate type and value of mean value of AX that denotes rationally, the average statistical performance of the differential percentage change (X) of the sales (iii) Find the expectet value and standard deviation of the RV,X=[X0+(X)]% with X0=50% (iv) Find mode of the RV,X=[X0+(X)]% with X050% (v) Determine: p(X) from (UB of X ) to Median; and p(X) from Median to LB of X