Ch 5 presentation Statistics grade 11
Page No 116:
Question 1:
Using some hypothetical data, and descriptive form of data presentation:
Describe the impact of strike by the traders in your city.
ANSWER:
The strike by traders in our city has caused shortage of onions by 50% and pushed up onion prices by 75%.
Page No 116:
Question 2:
Using some hypothetical data, and descriptive form of data presentation:
Decribe the impact of increase in the price of petrol on the demand for cars and scooters.
ANSWER:
Due to rise in the price of petrol by 30%, the demand for cars and scooters has gone down by 50%.
Page No 124:
Question 1:
Construct a table presenting data collected by you on preferential liking of your class-mates of different teachers in your school.
ANSWER:
Preferential Liking of Students for different Teachers
| Teacher Name | Number of Students |
| Rashmi Usha Mehra Gyan Singh Rakesh jindal Poonam Singh | 10 5 12 17 3 |
Page No 124:
Question 2:
Construct a table on marks in English secured by the students of Class X in your school in the house examination.
ANSWER:
Marks Obtained by Students of Class X in English
| Marks | Number of Students |
| 20 − 30 30 − 40 40 − 50 50 − 60 60 − 70 70 − 80 80 − 90 90 − 100 | 5 10 12 14 20 13 9 3 |
Page No 124:
Question 3:
Construct a table on the runs scored by different players in the inter-school cricket tournament hosted by your school.
ANSWER:
Runs Scored by Players in the Inter School Cricket Tournament
| Runs | Number of Players |
| 0 − 20 20 − 40 40 − 60 60 − 80 80 − 100 100 − 120 | 5 6 9 7 5 3 |
Page No 125:
Question 1:
Check with your Principal. Request him to provide you information on the number of students in the school over the last 10 years. Present the data in a table based on temporal classification.
ANSWER:
Number of students (2012-2021)
| Year | Number of Students |
2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 | 2540 2450 2300 2400 2535 2700 2630 3000 2950 2970 |
Page No 125:
Question 2:
Go to the office of Registrar, Births and deaths, of your town. Make a request for data on the number of births and deaths registered during different years over the last 10 years. Present the data in the form of table, showing temporal classification of data.
ANSWER:
Registered Number of births and deaths (20125-2021)
| Year | Number of Birth | Number of Death |
2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 | 50 60 70 73 65 85 90 91 87 88 | 25 27 32 26 27 15 19 30 40 35 |
Page No 126:
Question 1:
Get information on the native state of the students in your school. Present the data in the form of a table, showing spatial classification of data.
ANSWER:
Students from different States (2013)
| States | Number of students |
| Uttar Pradesh Assam Himanchal Pradesh Haryana Rajasthan | 50 40 35 70 45 |
Page No 126:
Question 2:
Get information on the location of Head-office of different banks in your locality. Present the data in the form of a table, showing spatial classification of data.
ANSWER:
Location of Head office of different Banks
| Location | Bank |
| Shakti Nagar Vasant Kunj Greater Kailash Chandani Chowk Rajiv Chowk | P.N.B Bank S.B.I Bank O.B.C Bank Vaishya Bank Vijaya Bank |
Page No 137:
Question 1:
In 2019-20, the contribution of primary, secondary and tertiary sectors to India's GDP (hypothetical figures) was 17.6%, 28.2% and 54.2% respectively. In 2020-21, these shares were 17.7%, 27.0% and 55.3% respectively. Present this information in the form of a table.
ANSWER:
Contribution of Primary, Secondary and Tertiary Sector to India’s GDP (in %)
| Year | Primary Sector | Secondary Sector | Tertiary Sector | Total |
| 2019-20 2020-21 | 17.6 17.7 | 28.2 27 | 54.2 55.3 | 100 100 |
Page No 137:
Question 2:
Prepare a sketch of such a table that exhibits the following types of information on the number of students of your college:
(i) Faculty-wise: Arts, Commerce and Science.
(ii) Class-wise: XI; B.A. (I); B.A. (II); and B.A. (III).
(iii) Sex-wise: Boys and Girls.
ANSWER:
Distribution of Students
(according to faculty, class and sex)
| ARTS | Commerce | Science | |||||||
| Class | Boys | Girls | Total | Boys | Girls | Total | Boys | Girls | Total |
| XI B.A. (I) B.A. (II) B.A. (III) | |||||||||
| Total | |||||||||
Page No 137:
Question 3:
↵Following information relates to the exports from India to USSR and UK in the years 2018, 2019, 2020 and 2021 (hypothetical figures). Present it in the form of a table.
| Year | 2018 | 2019 | 2020 | 2021 |
| Exports to USSR (₹ crore) | 209 | 416 | 1,305 | 1,655 |
| Exports to UK (₹ crore) | 170 | 421 | 550 | 670 |
ANSWER:
Exports from India to USSR and UK
(2018 - 2021) (in Rs crore)
| Year | Export to USSR (Rs Crore) | Export to UK (Rs Crore) |
| 2018 2019 2020 2021 | 209 416 1,305 1,655 | 170 421 550 670 |
Page No 137:
Question 4:
Point out the mistakes in the following table. Rearrange it correctly.
| Number of Students | Subjects | |||
| Economics | English | Hindi | History | |
| Boys | ||||
| Girsl | ||||
ANSWER:
The following are the mistakes in the given table.
1. The table does have a title and a head note.
2. The sub-entries and the captions have not been noted carefully.
3. The total of the rows and the columns is not provided.
Number of Students
(according to subject and sex)
| Number of Students | |||
| Subjects | Boys | Girls | Total |
| Economics English Hindi History | |||
| Total | |||
Page No 138:
Question 5:
Following information relates to the marks securd by 50 students in Economics. Present the following information in the form of a table.
| Marks | 0−10 | 10−20 | 20−30 | 30−40 |
| Students | 15 | 12 | 18 | 5 |
ANSWER:
Marks Obtained by Students in Economics
| Marks | Number of Students |
| 0 − 10 10 − 20 20 − 30 30 − 40 | 15 12 18 5 |
Page No 138:
Question 6:
Following information relates to the marks secured by 50 boys and girls in their paper in Economics. Present the information in the form of a table.
| Marks | 0−10 | 10−20 | 20−30 | 30−40 |
| Boys | 10 | 7 | 6 | 1 |
| Girls | 5 | 5 | 12 | 4 |
ANSWER:
Marks obtained by Students in Economics
| Marks | Number of Students | Total | |
| Boys | Girls | ||
| 0 − 10 10 − 20 20 − 30 30 − 40 | 10 7 6 1 | 5 5 12 4 | 15 12 18 5 |
| Total | 24 | 26 | 50 |
Page No 138:
Question 7:
Draw a blank table to show the distribution of population according to sex, literacy, and income.
ANSWER:
(according to age, sex and literacy) (in lakhs)
| Income (in '000) | Literate | Illiterate | ||||
| (0 −40) | Male | Female | Total | Male | Female | Total |
| (40 −80) | ||||||
| (80-120) | ||||||
| (120-160) | ||||||
| (160-200) | ||||||
| Above 200 | ||||||
| Total | ||||||
Page No 138:
Question 8:
Present the following information in a suitable tabular form:
(i) In 2020, out of total 2,000 workers in a factory, 1,550 were members of a trade union. The number of women workers employees was 250, out of which 200 did not belong to any trade union.
(ii) In 2021, the number of union workers was 1,725 of which 1,600 were men. The number of non-union workers was 380, among which 155 were women.
ANSWER:
The information given in the question can be summarised as follows.
Year 2020
Total no. of workers in the factory = 2000
Total no. of trade union workers = 1550
Total no. of non-trade union workers = (2000 −1550) = 450
Total no. of women worker = 250
Total no. of non-trade union women worker = 200
Total no. of trade union women worker = (250 − 200) = 50
Total no. of trade union men worker = (1550 − 50) = 1500
Total no. of non-trade union men worker = (450 − 200) = 250
Total no. of men workers = 1500 + 250 = 1750
Year 2021
Total no. of trade union workers = 1725
Total no. of trade union men worker = 1600
Total no. of non-trade union women worker = (1725 − 1600) = 125
Total no. of non-trade union workers = 380
Total no. of non-trade union women worker = 155
Total no. of non-trade union men worker = (380 − 155) = 225
Total no. of workers in the factory = 1725 + 380 = 2105
Total no. of men workers = 1600 + 225 = 1825
Total no. of women workers = 125 + 155 = 280
| Trade Union | Non-Trade Union | Total | |||||||
| Year | Male | Female | Total | Male | Female | Total | Male | Female | Total |
| 2020 | 1500 | 50 | 1550 | 250 | 200 | 450 | 1750 | 250 | 2000 |
| 2021 | 1600 | 125 | 1725 | 225 | 155 | 380 | 1825 | 280 | 2105 |
| Total | 3100 | 175 | 3275 | 475 | 355 | 830 | 3575 | 530 | 4105 |
