Q2. The following are the grades which 40 students obtained in a certain course in 1997E.C. here in Mekelle University...

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Q2. The following are the grades which 40 students obtained in a certain course in 1997E.C. here in Mekelle University of the Arid Campus.

75 89 66 52 90 68 83 94 77 60 38 47 87 65 97 49 65 72 73 81 63 77 31 88 74 37 85 76 74 63 69 72 91 87 76 58 63 70 72 65

a. Construct an absolute frequency distribution.

b. Convert the distribution obtained in (a) into a Relative & Percentage distribution.

c. Convert the distribution in (a) into a “Less than” &

a “More than” cumulative distribution

d. Construct a histogram, frequency polygon and ogive curve

Q3. Consider the following three data sets A, B and C.

A = {9,10,11,7,13}

B = {10,10,10,10,10}

C = {1,1,10,19,19}

Calculate:

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