i need help from -Himanshu Mahto-

By taking 60 stock readings (closing price)

Find volatility value .

Estimate volatility from historical data The stock price usually observed at fixed interval of time (e.g. every day, every week, every month....). Let: n+1 number of observation. S; stock price at end of ith interval (i=1,2,...,n). T length of time interval in year. Let u = In S,+1 S The usual estimate of the standard deviation ofu, is given by: 1 (u , - ) n - 1 The standard deviation of U, is ove so: szoVi,oz. i S 1 = 1 S R Market Watch (Marker Closed a CITY CEMENT 3 months 25 24 23 22 21 20 19 26 12 28 13 30 16 9 Net Change -1.10 % Change -41.51 Last Price 23.30 Estimate volatility from historical data The stock price usually observed at fixed interval of time (e.g. every day, every week, every month....). Let: n+1 number of observation. S; stock price at end of ith interval (i=1,2,...,n). T length of time interval in year. Let u = In S,+1 S The usual estimate of the standard deviation ofu, is given by: 1 (u , - ) n - 1 The standard deviation of U, is ove so: szoVi,oz. i S 1 = 1 S R Market Watch (Marker Closed a CITY CEMENT 3 months 25 24 23 22 21 20 19 26 12 28 13 30 16 9 Net Change -1.10 % Change -41.51 Last Price 23.30