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A data set of monthly expediture rounded to the nearest dollar and cure at coffee shop by a sample of 700 household has a minimum value of 4 and a maximum value of 210 suppose we want to group these data into 6 classes of equal with assuming we take the lower limit of the 1st class as one and the upper limit of the sick class as 210 determine the class limit boundaries and midpoint for a group quantitive data table

Sagot :

EXPLANATION

Number of households = 700

Minimum value = $4

Maximum value = $210

Dividing this by the upper limit by by the needed number of classes: 210/ 6 = 35

The width of each class is 35.

Class width = 35

Class Limits Lower Boundary Upper Boundary Class midpoint

1 to 35 0.5 35.5 36/2 = 18

36 to 70 35.5 70.5 106/2= 53

71 to 105 70.5 105.5 176/2= 88

106 to 140 105.5 140.5 246/2= 123

141 to 175 140.5 175.5 316/2= 158

176 to 210 175.5 210.5 386/2= 193

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