STATISTICS AND PROBABILITY

I. Given the weight distribution of 50 students in a class. Weights(kilo) No. of Students 45 49 6 50 - 54 9 55 - 59 12 60 64 15 65 69 8 Determine the following: The upper limit of the second class The lower limit of the fourth class The upper class boundary of the last class The lower class boundary of the first class The class interval size The largest frequency The class mark of the third class The relative frequency of the third class The percentage of the sector occupied by the second class The percentage of students having the weights less than 60 kilos composes