Data Analysis And Data Sufficiency

Data analysis and data sufficiency DR. T.K. JAIN AFTERSCHOOOL,BIKANER 09414430763 [email protected]

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• Mouse population X doubles every week. How many weeks from now will population X first exceed 1,000,000 ? (1) The mouse population is now 65,536. (2) Fifteen weeks ago the mouse population was 2. •

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• We can get answer from either statement alone.

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• What is the value of x –1? • (1) x + 1 =3 • (2) x – 1 < 3

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• We can draw the answer from the first statement alone.

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• Is the integer n even ? • (1) n ^2 -1 is odd. • (2) n ^1/2 is an integer.

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• First statement alone is sufficient to give the answer.

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The graph shows growth in exports – when was hightest percentage growth? (x axis =year, y = amt.) 10000 8000 6000 Series1

4000 2000 0 1

2

3

4

5

6

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• The highest growth is in the period 3rd year – solve by inspection.

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When was hightest quantity (in weight) exported? (x = year, y = export) 10000 8000 6000

Amt

4000

price per tonne

2000 0 1

2

3

4

5

6

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• The highest exports was in 6th year – about 1.56 tonnes.

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• College is selecting a four-person debate team. There are seven candidates of equal ability. X, Y and Z, who belong to Group A; and L, M, N and P who belong to • Group B. The team must have two members from each group. Also, the members must be able to work well • with the all the members of the other team. Debaters Y & L, Z & N, L & M are incompatible pairs. If debater Y is rejected and M is selected, the team will consist of • (1) L, M, X and Z (2) M, N, X and Z (3) M, N, P and X (4) M, P, X and Z.

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• (4) is the right answer.

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• Speaker: The great majority of people in this city have access to the best medical care available any where • in the world. • Opposition: There are thousand of poor in this city who cannot afford to pay to see a doctor. • Which of the following is true of the opposition’s comment? • (1) It constitutes a hasty generalization on few examples • (2) It cities statistical evidence which tends to corroborate the views of the speaker • (3) It tries to compare two unrelated data and draws a contrarian conclusion • (4) It is not necessarily inconsistent with the speaker’s remarks.

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• The correct answer is 4th

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• ABC • D • EFG • H • I • Each of the digits 1, 2, 3, 4, 5, 6, 7, 8 and 9 is represented by a different letter in the figure. • A + B + C, C + D + E, E + F + G and G + H + I is equal to 13. • Which of the digits does E represent? • (1) 9 (2) 4 (3) 7 (4) 1

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• E is equal to 4, • A = 5,b=6,c=2,d=7,f=8, g=1,h =3,I = 9

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• Number of different types of tyres sold by a company over the years (Numbers in lakh) • Year A B C D E • 1989 35 20 40 14 25 • 1990 40 15 55 20 35 • 1991 30 25 45 25 30 • 1992 25 30 50 30 35 • 1993 45 35 25 38 32 • 1994 42 28 34 42 30 • 1995 36 34 38 48 25 • What was the approximate percentage increase in the number of D type tyres sold from 1992 to1993? • (1) 26 (2) 30 (3) 35 (4) 40

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• Answer is 1st (26 percent approx.)

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What was the increase in interest payment, if total budget were 20 and 30

.

millions in 02 and 07 respectively

year 2007

Year 2002

interest

education

15%

13%

education interest 26%

health

health

17%

18% security

9%

security

26% environme energy 19%

nt 9%

18%

environme

energy

nt

6%

24%

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• 4.8 million increase from 2002 to 2007, in percentage terms it is 160 percentage increase.

AFTERSCHOOOL centre for social entrepreneurship bikaner www.aftersch

AFTERSCHOOOL centre for social entrepreneurship bikaner www.aftersch

• Thanks • Afterschoool conducts three year integrated PGPSE (after class 12) and 18 month PGPSE (Post Graduate Programme in Social Entrepreneurship). It is free for all. It also conducts workshops on social entrepreneurship in schools and colleges all over India – start social entrepreneurship club in your institution today with the help from afterschoool and help us in developing society.

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