## Introduction to Data Interpretation

#### Data Interpretation

Direction: The following table gives zone wise survey report of the people of a country who take coffee. Study the table and answer the questions. 1. The percentage of people of south zone who take coffee at least once a day is close to

1. According to given table, we have
People in southern zone = 1450 + 1120 + 420 + 350 + 50 = 3390
People who take coffee at least once a day = 1450 + 1120 = 2570

 Required percentage = People who take coffee at least once a day × 100 People in southern zone

##### Correct Option: C

According to given table, we have
People in southern zone = 1450 + 1120 + 420 + 350 + 50 = 3390
People who take coffee at least once a day = 1450 + 1120 = 2570

 Required percentage = People who take coffee at least once a day × 100 People in southern zone

 Required percentage = 2570 × 100 ≈ 75.81 3390

Direction: The table shows the percentage of total population of a city in different age groups. Study the table and answer the questions. 1. If the difference between the number of people in the age groups (46 – 55) and (16 – 25) is 0.975 million, then the total population (in millions) of the city is

1. On the basis of given table in question ,
∵ Difference between the number of people in the age groups (46 – 55) and (16 – 25) = 0.975 million
Percent of people in the age groups (46 – 55) = 18.25%
And Percent of people in the age groups (16 – 25) = 15%
⇒ (18.25 – 15)% ≡ 0.975 million

##### Correct Option: B

On the basis of given table in question ,
∵ Difference between the number of people in the age groups (46 – 55) and (16 – 25) = 0.975 million
Percent of people in the age groups (46 – 55) = 18.25%
And Percent of people in the age groups (16 – 25) = 15%
⇒ (18.25 – 15)% ≡ 0.975 million

 ∴ 100 % ≡ 0.975 × 100 ≡ 30 millions 3.25

1. If there are 22 million people below 36 years, then the number of people (in millions) in the age group (56 – 65) is

1. As per the given above table , we see
Percentage of people below 36 years = (20 + 18.25 + 16.75)% = 55%
Percent of people in the age group (56 – 65) = 12.50%
∵ 55% ≡ 22 million

##### Correct Option: A

As per the given above table , we see
Percentage of people below 36 years = (20 + 18.25 + 16.75)% = 55%
Percent of people in the age group (56 – 65) = 12.50%
∵ 55% ≡ 22 million

 ∴ 12.50 % ≡ 22 × 12.50 = 5 millions 55

Direction: Study the table and answer the questions 1. Average height (in cm) of the girls whose heights are 155cm and above is about

1. On the basis of given table in question ,
Class interval (155 – 160) = 6 girls

 Mid-value = 155 + 160 = 157.5 2

Class interval (160 – 165) = 5 girls
 Mid-value = 160 + 165 = 162.5 2

 ∴ Required average = 6 × 157.5 + 5 × 162.5 11

##### Correct Option: B

On the basis of given table in question ,
Class interval (155 – 160) = 6 girls

 Mid-value = 155 + 160 = 157.5 2

Class interval (160 – 165) = 5 girls
 Mid-value = 160 + 165 = 162.5 2

 ∴ Required average = 6 × 157.5 + 5 × 162.5 11

 Required average = 945 + 812.5 = 1757.5 = 159.8 cm 3 3

1. The number of girls whose height is above 150 cm is

1. According to given table, we have

 Height No. of girls 135-140 04 140-145 07 145-150 18 150-155 11 155-160 06 160-165 05

##### Correct Option: A

According to given table, we have

 Height No. of girls 135-140 04 140-145 07 145-150 18 150-155 11 155-160 06 160-165 05

Required answer = 11 + 6 + 5 = 22