For each of 20 composers, the table lists the year of birth, the year

Question

Composer    Year of birth    Year of death    Number of perfomrances       Bach  1685  1750  1,388     Beethoven  1770  1827  2,859     Brahms  1833  1897  1,848     Chopin  1810  1849  748     Dvořák  1841  1904  1,071     Handel  1685  1759  757     Haydn  1732  1809  989     Mendelssohn  1809  1847  865     Mozart  1756  1791  3,035     Prokofiev  1891  1953  931     Puccini  1858  1924  723     Rachmanionov  1873  1943  673     Ravel  1875  1937  864     Schubert  1797  1828  1,023     Schumann  1810  1856  1,460     Shostakovich  1906  1975  779     Strauss  1864  1949  720     Stravinsky  1882  1971  849     Tchaikovsky  1840  1893  2,295     Verdi  1813  1901  845      Total    ----    ---    24,722

For each of 20 composers, the table lists the year of birth, the year of death, and the number of performances in 2010 of works written by that composer.

For each of the following statements, select  Yes  if the statement accurately reflects the information in the table; otherwise select  No .

ID: 100312

Aryan19852 · Answer

This question was easy 
1) 1/3 of total is approx 8000 but when u total no. of performance of 1700's it's around 7942 so 1st statement is true
2) Again adding top 3 performance gives 8225 which is not even half of total so it's false
3) Mean is total/composer= 24722/20= 1236.1 and median is 10th+11th/2 from ascending order giving 898 here statment is true mean is bigger than median by more than 300

Adarsh_24 · Answer

1. I would definitely use calculator here. Way too close for comfort. But, only realised after trying to estimate. 
Should I have tried with calculator from the start? Do anyone have strategies here?

imRaj · Answer

You can do this without calculator as well. It's already given that the no of performances is 24722.
Now divide this by 20 to get mean.
There is no use of calculator in this Q.

Batka · Answer

How come composers born in the 1700s accounted for less than a third of the total performances ? 
We have 10,51 from those who were born in 1700s, which is bigger than the 1/3 of the total number of performances.

Could anyone explain it please?

Thank you

joshuaa77 · Answer

There are only 4 born in the 1700's and you can estimate them to be slightly under 8000 by just using approximation.

Yes	No
		Composers born in the 1700s accounted for less than a third of the total performances.
		Music by composers ranked first, second, and third, in terms of number of performances, together accounted for more than half of the total number of performances.
		The mean number of performances per composer exceeded the median by more than 300 performances.

For each of 20 composers, the table lists the year of birth, the year

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Composer	Year of birth	Year of death	Number of perfomrances
Bach	1685	1750	1,388
Beethoven	1770	1827	2,859
Brahms	1833	1897	1,848
Chopin	1810	1849	748
Dvořák	1841	1904	1,071
Handel	1685	1759	757
Haydn	1732	1809	989
Mendelssohn	1809	1847	865
Mozart	1756	1791	3,035
Prokofiev	1891	1953	931
Puccini	1858	1924	723
Rachmanionov	1873	1943	673
Ravel	1875	1937	864
Schubert	1797	1828	1,023
Schumann	1810	1856	1,460
Shostakovich	1906	1975	779
Strauss	1864	1949	720
Stravinsky	1882	1971	849
Tchaikovsky	1840	1893	2,295
Verdi	1813	1901	845
Total	----	---	24,722

GMAT Graphs and Tables (G&T) Questions

For each of 20 composers, the table lists the year of birth, the year

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