Data Interpretation - Line Charts - Discussion

Study the following line graph and answer the questions.

Exports from Three Companies Over the Years (in Rs. crore)


In how many of the given years, were the exports from Company Z more than the average annual exports over the given years?

[A]. 2
[B]. 3
[C]. 4
[D]. 5

Answer: Option C


Average annual exports of Company Z during the given period

    = 1 x (60 + 90 + 120 + 90 + 60 + 80 + 100)

    = Rs. ( 600 ) crores

    = Rs. 85.71 crores.

From the analysis of graph the exports of Company Z are more than the average annual exports of Company Z (i.e., Rs. 85.71 crores) during the years 1994, 1995, 1996 and 1999, i.e., during 4 of the given years.

Earl said: (Jul 24, 2010)  
Why 1996 also included?

Rajendra said: (Mar 26, 2011)  

Please let me know how this happen because in the quetion he has asked for how many years and you have given 4.

But you have calculated the average of all the years.

So justify this.


Kapil said: (Apr 3, 2011)  
Ya I'm also agree with MR. Rajendra.

Sanjay said: (Jul 6, 2011)  
Give us please exact way to get ans.

Mohan said: (Feb 11, 2012)  
Hey all,

Let me explain in simple manner.

The question is perfect, answer is even more perfect... Only problem is ur way of understanding... Let me simplify this.

As GIVEN, Annual exports of company z( from diagram) over 7 years(1993 to 1999) are :60,90,120,90,60,80,100....Ok

Now, the question is.... if we calculate avg of those annual exports of company Z, then how many years are there with exports more than that avg.

The avg of the annual exports of company z is..... 600/7= 85.71
Then , in 1993 exports are 60 ,which is less than 85.71
in 1997 exports are 60 ,which is less than 85.71
in 1998 exports are 80 ,which is less than 85.71

Hence , in the years 1994,95,96,99 the annual export is more than avg of annual export of all 7 years. Hufffff Thanks.

Sumit said: (Mar 16, 2012)  

Thank you very much for your explanation.

Shailusha said: (Dec 24, 2013)  
Actually for the 3 years i.e. 1994, 1995, 1996 company Z has high exports compared to the other two companies. Then why the answer is given as 4 years?

Rajesh said: (Jun 24, 2014)  

In the year 1999 also annual export is more than avg of annual export of all 7 years (85.71).

Amrita said: (Feb 13, 2015)  
The question is for "exports from Company Z" and not "average exports from Company Z". Hence, taking into account the exports of Z as compared to the average exports of all the 3 companies for each year, the answer should be 5. The question should have been more candidate.

Pradeep said: (Sep 12, 2015)  
Hi @Amrita, agree with you, answer should be 5. Reason is that the comparison given is with the average exports every over given years.

Hence formula should be exports of z in given year/avg export done in that year.

Guesi said: (Jun 17, 2018)  
How the avg of 85.7 is more than 100 In the year 1999?
The answer should be 3.

Or the answer should be 5 if we will compare using the average of the 3 companies combined.

Quwi said: (Jul 25, 2018)  
What about 1993?

Somya Gupta said: (Aug 9, 2018)  
How can you find this?

Then, in 1993 exports are 60 , which is less than 85.71.
in 1997 exports are 60, which is less than 85.71.
in 1998 exports are 80, which is less than 85.71.

Aish said: (Jul 18, 2019)  
Thanks for the good explanation @Mohan.

Java said: (Sep 12, 2019)  

Thanks for explaining it.

Nagendra said: (Nov 10, 2019)  
In majority questions explanation is not right. 93 is less that Z average why 93 is not considered?

Rai said: (Oct 29, 2020)  
Z's Average = 600/7 = 85.71.
So, in the year
1994 = 90 , (90>85.71).
1995 = 120,(120>85.71).
1996 = 90,(90>85.71).
1999 = 100,(100>85.71).

Above 4years has more exports than average.

Remaining years were less than average.
i.e 1993 = 60 ,(60<85.71).
1997 = 60,(60<85.71).
1998 = 80,(80<85.71).

Champ said: (Jul 15, 2021)  
It will be 5 so the answer will be D.

Here, the average you have taken is wrong. For this question average of z is not required but an average of the three companies is required so the answer would be option D 5.

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