Business Statistics

58 Business Statistics

Solution Frequency polygon can be constructed with the help of frequencies given in the Table

2.15. For constructing an ogive, we have to rst construct cumulative frequencies as

show in Table 2.16. Figure 2.69 is the MS Excel produced frequency polygon for Ex-

ample 2.13 and Figure 2.70 is the MS Excel produced ogive for Example 2.13.

tabLe 2.16

Cumulative frequency distribution

Income interval (in thousand rupees) Number of employees (frequency) Cumulative frequency

10 under 20 25 25

20 under 30 35 60

30 under 40 40 100

40 under 50 47 147

50 under 60 28 175

60 under 70 20 195

FigUre 2.70

MS Excel produced ogive for

Example ...