In a table, data is arranged in vertical columns and horizontal rows. It is the simplest & most direct representation of data since all the numerical values are presented. However, interpreting and analyzing data from a table can get quite time  consuming.
Types of Tables
There are 2 kinds of tables.
 Simple tables  Presents only one characteristic of the
 Complex tables  Presents the division of data in 2 or more
Let's solve an example:
Study the following table and answer the questions given below.
Days 
Colleges 

A 
B 
C 
D 

Monday 
160 
97 
52 
48 
Tuesday 
177 
146 
92 
90 
Wednesday 
195 
162 
122 
111 
Thursday 
216 
161 
152 
158 
Friday 
230 
183 
182 
188 
Saturday 
242 
197 
222 
221 
Requirement of Samosas by 4 colleges in Coimbatore.
1 ) In which college is the percentage increase in the requirement of samosas maximum over the given days?
a) College A b) College C c) College B d) College D
Solution:
Percentage increase in requirement from Monday to Saturday=
Clearly, 173/48 is greater. Hence, option (d) is the answer.
2) In which day is the percentage of the total required minimum for college C?
a)Thursday b) Friday c) Wednesday d) Saturday
Solution:
Clearly, 122/590 is lesser than other values. Hence option (c) is the answer.
3) In how many days was the requirement of samosas by college D less than its average requirement for the week?
a) One b) Two c)Three d) Four
Solution:
Average requirement by college D = 1 /6 (48+ 90 + 111+ 158 + 188 + 221) = 136
Compare the average with individual values for college D. Requirements for 3 days, i.e., Monday, Tuesday & Wednesday are less than the average.
Hence, option (c) is correct.
4) By approximately what percent was the total requirement in all the 4 colleges on Wednesday less than that on Friday?
a) 16 b) 24 c) 29 d) 31
Solution:
Percentage difference is in between 25% and 20%.
Hence, option (b) is correct.