PROBLEM 1 Given the average price per month of PT. DataDigX from January 2019 To August 2019, as follows: Month Stock Price Jan 1426 Feb 1428 March 1428 Apr 1320 1282 Jun 1362 Jul 1388 Aug 1469 Find : Mei a) The expected return per month b) The average return for PT. DataDigX c) The Risk value of PT. Data DigX d) The conclusion from the values that you get from (a) to (c)