4.The data below are the passing scores on an Algebra exam in one class.

60

68 88 76 60 92 92 92 88 60 68 92 88

92

64 60 76 64 92 88 76 60 60 64 60 88

76

64

Construct the frequency table by using five classes.

Class Limit

f

Class

Midpoint

Cumulative

Frequency

Class

Boundary

(a)Create a frequency polygon to represent the above data.

(b)Create an ogive to represent the above data.