Data Interpretation simply means to understand given data and transforming the same data into the desired property. Data given can be in any form from below given data representations

- Table
- Circular Graph
- Venn Diagram
- Bar Graph
- Scattered Plots
- Line Graphs

Approximately three Data Interpretation questions per section are asked in GRE and it can be of any type either MCQ or Numeric Entry.

### Data represented in Table Form:

The table shows a comparison of two plans(call charges for 1 minute and call charges for 2 minutes) provided by telecom companies. Please answer questions as per the table.

Telecom Companies | Call Charge per minute | Call Charge per 2 minutes |
---|---|---|

B | 0.94 | 1 |

A | 0.98 | 1 |

R | 0.98 | 0.98 |

V | 0.95 | 0.98 |

M | 2 | 2.2 |

U | 1.1 | 1.3 |

T | 1.8 | 2.0 |

**Ques-1:**

Which company provides highest percentage increase in call charges from one minute plan to two minutes plan ?

**Explanation:**

For B, the Percentage increase = 0.06/0.94 = 6/94 6% (slightly greater than 6%)

For A, the Percentage increase = 0.02/0.98 = 2/98 2% (Slightly greater than 2%)

For R, there is no increase in the rates.

For V, the Percentage Increase = 0.03/0.95 = 3/95 3% (Slightly greater than 3%)

For M, the Percentage Increase = 0.2/2 = 1/10 = 10%

For U, the Percentage Increase = 0.2/1.1 = 2/11 20% (Slightly less than 20%)

For T, the Percentage Increase = 0.2/1.8 = 2/18 = 11%

So the answer is U with 20% increase.

**Ques-2:**

How many companies increased charges in second plan greater than 10% ?

**Explanation:**

For B, the Percentage increase = 0.06/0.94 = 6/94 6% (slightly greater than 6%)

For A, the Percentage increase = 0.02/0.98 = 2/98 2% (Slightly greater than 2%)

For R, there is no increase in the rates.

For V, the Percentage Increase = 0.03/0.95 = 3/95 3% (Slightly greater than 3%)

For M, the Percentage Increase = 0.2/2 = 1/10 = 10%

For U, the Percentage Increase = 0.2/1.1 = 2/11 20% (Slightly less than 20%)

For T, the Percentage Increase = 0.2/1.8 = 2/18 = 11%

So, the answer is 2.

**Ques-3:**

Based on the information in the table, which of the following three statements are true?

**Explanation:**

Statement 1: Percentage increase in charges of the second plan of M and T are the same.

Statement 2: M provides costly services amongst them all.

Statement 3: All companies provide less than 20% difference in both the plans.

**Statement-1:**FALSE

Bases are different in both cases. Quantity with the higher base provides more percentage increase. In our case, it is M. Thus the statement is False.**Statement-2:**TRUE

Percentage increase, as well as the base of M, are highest. Thus it provides costly service amongst them all.**Statement-3:**TRUE

Increase in M rates are highest and also the percentage increase is highest which is slightly less than 20. Thus the statement is True.

### Data represented in Circular Graph and Line Graph:

Above is mentioned the graph of Foundation years of different Telecom companies in a particular area and their usage in particular section. The total population of the section is 5, 00, 000.

**Ques-1:**

How many people use oldest telecom services?

**Explanation:**

The oldest telecom company is M having been founded in 1985.

From the pie chart, we can say that 12% of the population use telecom services provided by M.

Thus the answer is = 5, 00, 000 * (12/100) = 60, 000

**Ques-2:**

The companies founded after 2000 cover how much percentage of population ?

**Explanation:**

There are only two companies founded after 2000, which are R and U. So, the percentage of the population covered by these companies are (14 + 5) = 19%

### Data represented in Venn Diagram:

In a survey of 20, 000 people, 5, 300 have used telecom services provided by A; 10, 555 used telecom services provided by B and 2, 000 people have used services provided by both the providers.

**Ques-1:**

How many people are using telecom services provided by A but not B ?

**Explanation:**

People using services provided by A – People using services provided by both

= 5300 – 2000 = 3300

**Ques-2:**

How many people are using services provided by at least one service provider ?

**Explanation:**

People using services provided by A + People using services provided by B – People using services provided by both

= 5300 + 10555 – 2000 = 13855

**Ques-3:**

How many people do not use services provided by either of the service providers ?

**Explanation:**

Total – People using at least one service,

= 20000 – 13855 = 6145