In 2019, 25 MA102 students were randomly selected to study the number of hours spent by each to prepare for their final exam, given as follows: 39 50 41 24 26 27 32 48 29 44 25 40 37 42 49 33 30 48 31 45 24 27 43 28 44 1 ) Construct a frequency distribution with six classes. ii) Construct a histogram, frequency polygon and the ogive for the above data. iii) Find the mean. iv ) Find the median score. v) Calculate the variance and standard deviation