MASTERY OVER DATA INTERPRETATION & DATA
(And other topics of Quantitative
Compared to the IBPS Test, SBI Test gives
more importance to
and Data Analysis. This is because, more
than Arithmetic, it is the large volume of Data that a Bank Executive has to
deal with, day in and day out. Ability to Read, Interpret, Analyze, Consolidate,
Surmise etc. the large volume of data in the form of Reports, Tables, Charts,
and Graphs is an important attribute. Hence the stress on Data Analysis and Data
Interpretation, in preference to a Quantitative Aptitude Test. (Of course, some
questions, 5 to 10, on other topics of
Quantitative Aptitude, can also be
Comfort with numbers Being
Number-friendly. Here is an interesting anecdote:
We have heard of Srinivasa Ramanujan, most
famously linked with a number known as the Ramanujan number. A story is that,
once, Prof Hardy, a well-known mathematician of Cambridge University visited
Ramanujan who was then hospitalised in London. Prof Hardy said that he came in a
taxi, which had a very uninteresting Registration number, 1729. “No”, said
Ramanujan, “that is a very interesting number. 1729 is the smallest number, that
can be expressed as the sum of two different cubes, in two different ways.” From
that day, 1729 came to be known as the Ramanujan number. 10^3 + 9^3 = 1000 + 729
= 1729 or, 12^3 + 1^3 = 1728 + 1 = 1729,
Let us too, toy around with numbers; even
if no number gets to be known in our name, we can at least crack easily, the
numerical part of the exam, without any difficulty.
2. Learn well, topics like
Averages. These will be used extensively in
interpreting and analysing data.
3. Bill Gates, co-founder of Microsoft once
said, “If I have a tough task to be done, I give it to the laziest fellow in the
team; being lazy, he will surely find the easiest way to do it.” Yes, (Be lazy);
find out the smartest ways to do the problems in these topics, much faster than
& ahead of others.
4. Practise well and be adept in using speed maths / short-cuts relating to these topics. Some items you should develop speed
Simultaneous addition and subtraction of
up to six 5 digit numbers
of three / two-digit
numbers by three / two digit numbers.
Square roots of up to 4 digit perfect
of up to 6 digit perfect cubes
Multiplication by 5, 25, 75, 125
by 5, 25, 75, 125
Short-cuts in division.
Conversion from Fractions to Decimals to
Percentages and vice versa; and calculations using one instead of another.
Pythagorean triplets (Groups of three
numbers satisfying Pythagoras’ theorem).
Learn by heart
Squares of numbers up to 30 & Cubes of numbers up to 15 – (Stick
the list on your study table for frequent glance & quick memorizing.)
Practice doing all calculations mentally as far as possible, without taking pen
to paper. The moment you begin using pen & paper, you have begun to waste time;
the greatest damage you can do to yourself, in a competitive exam of this type.
Practice using the method of Approximation / Substitution, as a quick method to
Tips for Interpreting Data
Have a cursory glance at the given chart / table / graph and understand quickly
what it represents.
Check by a careful glance, and mentally, without doing any actual calculation,
the units used, relation between the different units, and ensure that the
appropriate totals of the columns & rows of the chart / table are correct.
Some graphs / diagrams will give you the
answer to a question, by a mere glance at the diagram. Practice to extract these
answers merely by looking at it intelligently & without use of paper and pen.
Using pen and paper where it can be avoided, is a waste of time.
The Intellectual capability you develop
during your preparation for the Test of Reasoning should come to your aid to
understand and make deductions from the diagrams before you. Very often,
understanding and interpretation of a diagram or a table or graph, is a matter
of looking at intelligently, rather than doing certain arithmetical operations
involving the figures reported therein.
Some questions make you perform
unnecessary steps or lengthy calculations. Practice and Experience will give you
the ability to identify such steps and avoid doing them.
If required to do calculations, do them
using your knowledge of Ratio & Proportion, Percentages & Averages
appropriately. Use Speed maths / short cuts / approximations / substitution
methods to identify the correct option answer.
Some questions require you to perform
lengthy operations, resulting in wastage of time. The large number of practice
tests you take, should give you an idea of such questions; avoid them, or keep
them towards the end of the test.
Last, but not the least. Right from our
pre-primary days, we were taught by our parents and teachers to attempt all the
questions. Please unlearn this. Since, negative marks are involved, it is
smartness not to invite negative marks, In the scenario, if you do not know an
answer, it may be smart to leave it unattempted, rather than waste time over it
and earn -0.25 marks for the final wrong answer. During the time spent to earn
penal negative marks, you could have attempted other questions which would have
earned you some positive marks. Besides, the negative marks would eat into or
reduce the good work you have already done in other questions. Leave boldly,
what must be left untouched. No need to feel guilty about it.
"Whether you think you can, or think you
can't, you're right" - Henry Ford