Data Interpretation - Table Charts - Discussion

The following table shows the number of new employees added to different categories of employees in a company and also the number of employees from these categories who left the company every year since the foundation of the Company in 1995.

Year
Managers Technicians Operators Accountants Peons
NewLeft NewLeft NewLeft NewLeft NewLeft
1995760-1200-880-1160-820-
199628012027212025610420010018496
19971799224012824012022410415288
199814888236962081002489619680
19991607225610019211227288224120
20001939628811224814426092200104

4. 

What is the pooled average of the total number of employees of all categories in the year 1997?

[A]. 1325
[B]. 1195
[C]. 1265
[D]. 1235

Answer: Option B

Explanation:

Total number of employees of various categories working in the Company in 1997 are:

Managers = (760 + 280 + 179) - (120 + 92) = 1007.
Technicians = (1200 + 272 + 240) - (120 + 128) = 1464.
Operators = (880 + 256 + 240) - (104 + 120) = 1152.
Accountants = (1160 + 200 + 224) - (100 + 104) = 1380.
Peons = (820 + 184 + 152) - (96 + 88) = 972.

Therefore Pooled average of all the five categories of employees working in the Company in 1997

    = 1 x (1007 + 1464 + 1152 + 1380 + 972)
5

    = 1 x (5975)
5

    = 1195.


Ken Durant said: (Feb 11, 2011)  
"What is the average number of people per department in 1997?" or you can make it "per category". The original question is ambiguous and confusing.

Simran Gupta said: (Apr 21, 2013)  
Why are we not considering data of the year 1997 as according to question it is asking "pooled average. In the year 1997 " only? please do solve this query.

Kannan said: (Sep 19, 2013)  
What do you mean by pooled average?

Keerthi said: (Jan 11, 2014)  
Can anyone explain what is pooled average? and why they are calculating all the years. They have asked only for the year 1997.

Raj442 said: (Jan 26, 2014)  
Guys.. Here the data not showing the the no of employees in corresponding years. Here he has given only the no of new employees added and no of employees left. So, to find the increased employees average(pooled average means average of the increased employees), we should find the number of employees for that year. In order to find that we are calculating the members from the established year of the company.

Ex: In mechanics:

When the company started in the year 1995 the no of employees joined were 760.

In 1996 no.of employees are 760+280(new)-120(left) = 920,

In 1997 ,, , ,,, , , 920+179(new)-92(left) = 1007.

So pooled employees in the managers are 1007.

Similarly we can find the avg of all the categories.

Harsh Verma said: (Jun 14, 2014)  
We must consider only 1997. According to question.
And pooled means : present employees in 1997.

Pranalee said: (Apr 27, 2015)  
There is no any short-cut for such questions?

Rahul Singh said: (Apr 6, 2018)  
Assume that;-
New(Money deposit)
Left (expenses)
Now we want to know how much I saved.

Deposit (760+280+179)- expense (120+92)=1007.
Rest all you can do the same method and calculate average all 5's.
I hope it helps.

Sushmitha said: (Apr 26, 2018)  
Why not taking all the amounts?

Jimmy said: (Jul 22, 2018)  
It was asked only for 1997, so why consider three consecutive years?

K Hari Prasath Pillai said: (Jul 5, 2019)  
For which of the above-mentioned categories the percentage increase in the number of employees working in the company from 1995 to 2000 was the maximum?

Sheik said: (Sep 15, 2019)  
Can anyone please explain 1/5?

How we get this?

Anomie said: (May 18, 2020)  
@Sheik.

1/5 is the number of categories, Average = number of all employees/ number of categories (hence: 1/5x (5975).

Jay said: (Jun 4, 2021)  
Why do we take the data of the three years and why not just 1997.

it's kind of confusing, Please explain in detail.

Praveen T P said: (Sep 8, 2021)  
Employees at present = sum of employees till the given year.

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