QUESTION 1 A computer company is trying to increase its sales and is planning to run a new marketing campaign. To be abie to set a new target for saies they have decided to use the data of the last 30 months. The number of sales for the last 30 months is as fo|ows: 22 41 43 3 58 5 25 33 55 47 38 46 51 39 49 56 45 5 5? 31 43 5? 41 35 53 44 24 3? 43 3 By using this data set, piease calculate: a] Mean of the data. b] Variance of the data. c] Standard deviation of the data. ti] Make a comment on the standard deviation with regards to the mean of the data