Direction: Study the following bar diagram carefully and answer the following questions.
-
The difference between averages of production of TVs and LCDs from 2009 to 2012 is
-
- 600
- 700
- 800
- 900
Correct Option: D
From the given bar diagram , we see
Total production of T.V. from 2009 to 2012 = 6000 + 9000 + 13000 + 11000 = 39000
Number of given years = 4
| Average production of T.V. from 2009 to 2012 = | Number of given years |
| Average production of T.V. from 2009 to 2012 = | = 9750 | 4 |
Total production of L.C.D from 2009 to 2012 = 7000 + 9400 + 9000 + 10000 = 35400
Number of given years = 4
| Average production of LCD from 2009 to 2012 = | Number of given years |
| Average production of LCD from 2009 to 2012 = | = 8850 | 4 |
Required difference = Average production of TV from 2009 to 2012 - Average production of LCD from 2009 to 2012
∴ Required difference = 9750 – 8850 = 900
