The bar graph below shows the expenditure of a company (in million us $) from 91‐99. Answer the questions based on graph? The ratio of the number of years, in which expenditure are above the average expenditure, to those in which the expenditure are below the average expenditure is:

The bar graph below shows the expenditure of a company (in million us $) from 91‐99. Answer the questions based on graph? The ratio of the number of years, in which expenditure are above the average expenditure, to those in which the expenditure are below the average expenditure is: Correct Answer 3 : 5

Given

Bar chart is given and expenditure of company from year 1991 - 1998 is given

Calculation

Years

Expenditure

1991 - 1992

2640

1992 - 1993

3720

1993 - 1994

2520

1994 - 1995

3360

1995 - 1996

3120

1996 - 1997

4320

1997 - 1998

5040

1998 - 1999

3120

Total

27840

Average expenditure of the company from year 1991 to 1998

⇒ Average = Total sum of the observation/number of observation

⇒ 27840/8

⇒ 3480

⇒ Years in which expenditures are above to the average are 1992- 1993, 1996 - 1997 and 1997 - 1998

⇒ Years in which expenditures are above to the average are 3

⇒ Years in which expenditures are below to the average are 1991 - 1992, 1993 - 1994, 1994 - 1995, 1995 - 1996 and 1998 - 1999

⇒ Years in which expenditures are below to the average are 5

∴ The ratio of the number of years, in which expenditure are above the average expenditure, to the expenditure are below the average expenditure is 3 : 5

 

 

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