Important Data Interpretation Questions with PDF for SBI Clerk Pre, IBPS Clerk, LIC Assistant, RBI Assistant at Smartkeeda

Number of Articles (in thousands) Manufactured (M) and Defective (D) by 5 units of a company over the years

Year UNIT
I II III IV V
M D M D M D M D M D
1996 53 21 45 12 76 38 56 21 46 18
1997 49 18 32 10 45 24 63 24 36 14
1998 50 18 48 18 55 16 68 30 34 15
1999 65 20 68 15 57 20 54 19 48 12
2000 70 31 72 13 82 22 48 27 58 10
2001 44 15 56 22 38 32 40 15 60 1
1
What is the average number of defective items from Unit II for the given years?
» Explain it
D

Reqd avg
 
=    12 + 10 + 18 + 15 + 13 + 22
6
=    90  = 15
6

∴    Average of defective articles in Unit II will be 15000.

Hence, option D is correct.
 
2
What is the ratio of te total number of articles manufacture by Unit III to that by Unit V for all the years together?
» Explain it
A

Total no. of articles manufactured by Unit III

=   76 + 45 + 55 + 57 + 82 + 38

=   353 

 
Total no. of articles manufactured by Unit V

=   46 + 36 + 34 + 48 + 58 + 60

=   282
 

Reqd ratio  = 353 : 282

Hence, option A is correct.
 
3
What was the percentage (rounded off to nearest integer) of defective articles with respect to the number of articles manufactured by all the units together in the year 2001?
» Explain it
B
Total no. of defective articles in 2001

= 15 + 22 + 32 + 15 + 11

= 95


Total no. of manufactured articles in 2001

= 44 + 56 + 38 + 40 + 60

= 238


Reqd % =  95  × 100% = 39.9% ≈ 40%
238


Hence, option B is correct.

4
During which year was the percentage increase/decrease in manufacture from the previous year the highest for Unit I?
» Explain it
B
At first glance at the table we can infer that the two greatest percentage increase/decrease are happening in year 1999 and year 2001 and on further observation we can clearly conclude that it is the year 2001 in which the percent decrease is greater than percent increase happening in the year 1999.

Option B hence is the correct answer.
5
During which year was the largest percentage of articles defective out of the articles manufactured by Unit IV?
» Explain it
E
In year 2000 the number of defective items is 27 and the base value is 48 which means the percentage of defective items is more than 50% (27 is greater than half of 48 which is 24) while in the other years the percentage of defective items don't go even beyond 50%.

Therefore we can pick Option E as the correct answer.

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