R d sharma mathematics solutions class 6 Solutions for Chapter 22 data handling bar graphs

The following table shows the daily production of T.V. sets in the industry for 7 days of a week: Represent the above information by a pictograph.

The following table shows the number of Maruti cars sold by five dealers in a particular month.

Represent the above information by a pictograph.

The population of Delhi State in different census years is as given below: Represent the above information with the help of a bar graph.

Read the bar graph shown in Fig. 23.8 and answer the following questions: (i) What is the information given by the bar graph? (ii) How many tickets of Assam State Lottery were sold by the agent? (iii) Of which state, were the maximum number of tickets sold? (iv) State whether true or false. The maximum number of tickets sold is three times the minimum number of tickets sold. (v) Of which state was the minimum number of tickets sold?

Study the bar graph representing the number of persons in various age groups in a town shown inFig. 23.9. Observe the bar graph and answer the following questions: (i) What is the percentage of the youngest age-group persons over those in the oldest age group? (ii) What is the total population of the town? (iii) What is the number of persons in the age-group 60 – 65? (iv) How many persons are more in the age-group 10-15 than in the age group 30-35? (v) What is the age-group of exactly 1200 persons living in the town? (vi) What is the total number of persons living in the town in the age-group 50-55? (vii) What is the total number of persons living in the town in the age-groups 10-15 and 60-65? (viii) Whether the population in general increases, decreases, or remains constant with the increase in the age-group.

Read the bar graph shown in Fig. 23.10 and answer the following questions: (i) What is the information given by the bar graph? (ii) What was the number of commercial banks in 1977? (iii) What is the ratio of the number of commercial banks in 1969 to that in 1980? (iv) State whether true or false: The number of commercial banks in 1983 is less than double the number of commercial banks in 1969.

Given below (Fig. 23.11) is the bar graph indicating the marks obtained out of 50 in mathematicspaper by 100 students. Read the bar graph and answer the following questions: mathematics paper(i) It is decided to distribute workbooks on mathematics to the students obtaining less than 20 marks, giving one workbook to each of such students. If a workbook costs Rs. 5, what sum is required to buy the workbooks? (ii) Every student belonging to the highest mark group is entitled to get a prize of Rs. 10. How much amount of money is required for distributing the prize money? (iii) Every student belonging to the lowest mark-group has to solve 5 problems per day. How many problems, in all, will be solved by the students of this group per day? (iv) State whether true or false. (a) 17% of students have obtained marks ranging from 40 to 49. (b) 59 students have obtained marks ranging from 10 to 29. (v) What is the number of students getting less than 20 marks? (vi) What is the number of students getting more than 29 marks? (vii) What is the number of students getting marks between 9 and 40? (viii) What is the number of students belonging to the highest mark group? (ix) What is the number of students obtaining more than 19 marks?

Read the following bar graph (Fig. 23.12) and answer the following questions: (i) What is the information given by the bar graph? (ii) State each of the following whether true or false. (a) The number of government companies in 1957 is that of 1982 is 1: 9. (b) The number of government companies have decreased over the year 1957 to 1983.

Read the following bar graph and answer the following questions: (i) What information is given by the bar graph? (ii) Which state is the largest producer of rice? (iii) Which state is the largest producer of wheat? (iv) Which state has a total production of rice and wheat as its maximum? (v) Which state has the total production of wheat and rice minimum?

The following bar graph (Fig. 23.14) represents the heights (in cm) of 50 students of Class XI of a particular school. Study the graph and answer the following questions: (i) What percentage of the total number of students have their heights more than 149 cm? (ii) How many students in the class are in the range of maximum height of the class? (iii) The school wants to provide a particular type of tonic to each student below the height of 150 cm to improve his height. If the cost of the tonic for each student comes out to be Rs 55, how much amount of money is requires? (iv) How many students are in the range of shortest height of the class? (v) State whether true or false: (a) There are 9 students in the class whose heights are in the range of 155−159 cm. (b) Maximum height (in cm) of a student in the class is 17. (c) There are 29 students in the class whose heights are in the range of 145−154 cm. (d) Minimum height (in cm) of a student is the class is in the range of 140−144 cm. (e) There are 14 students each of whom has a height more than 150 cm is 12. (f) There are 14 students each of whom has a height more than 154 cm.

Read the following bar graph (Fig.23.15) and answer the following questions:

(i) What information is given by the bar graph? (ii) What was the production of cement in the year 1980-81? (iii) What is the minimum and maximum productions of cement and corresponding years?

The bar graph shown in Fig. 23.16 represents the circulation of newspapers in 10 languages. Study the bar graph and answer the following questions: (i) What is the total number of newspapers published in Hindi, English, Urdu, Punjabi, and Bengali? (ii) What percent is the number of newspapers published in Hindi of the total number of newspapers? (iii) Find the excess of the number of newspapers, published in English over those published in Urdu. (iv) Name two pairs of languages that publish the same number of newspapers. (v) State the language in which the smallest number of newspapers are published. (vi) State the language in which the number of newspapers is published. (vii) State the language in which the number of newspapers published is between 2500 and 3500. (viii) State whether true or false: (a) The number of newspapers published in Malayalam and Marathi together is less than those published in English. (b) The number of newspapers published in Telugu is more than those published in Tamil.

Explain the reading and interpretation of bar graphs.

Read the following bar graph and answer the following questions: (i) What information is given by the bar graph? (ii) In which year the export is minimum? (iii) In which year the import is maximum? (iv) In which year the difference between the values of export and import is maximum?

The following bar graph shows the results of an annual examination in a secondary school. Read the bar graph (Fig.23.22) and choose the correct option in each of the following: (i) The pair of classes in which the results of boys and girls are inversely proportional are: (a) VI, VIII (b) VI, IX (c) VIII, IX (d) VIII, X (ii) The class having the lowest failure rate of girls is: (a) VII (b) X (c) IX (d) VIII (iii) The class having the lowest pass rate of the student is: (a) VI (b) VII (c) VIII (d) IX

The following bar graph shows the number of persons killed in industrial accidents in a country for some years (Fig.23.23). Read the bar graph and choose the correct alternative in each of the following: (i) The year which shows the maximum percentage increase in the number of persons killed in coal mines over the preceding year is: (a) 1996 (b) 1997 (c) 1999 (d) 2000 (ii) The year which shows the maximum decrease in the number of persons killed in industrial accidents over the preceding year is: (a) 1996 (b) 1997 (c) 1998 (d) 1999 (iii) The year in which the maximum number of persons were killed in industrial accidents other than those killed in coal mines is: (a) 1995 (b) 1997 (c) 1998 (d) 1999

The production of saleable steel in some of the steel plants of our country during 1999 is givenbelow: given below construct a bar graph to represent the above data on a graph paper by using the scale 1 big division = 20 thousand tonnes.

The following data gives the number (in thousands) of applicants registered with anEmployment Exchange during. 1995-2000: Construct a bar graph to represent the above data.

The following table gives the route length (in thousand kilometers) of the Indian Railways in some of the years: Represent the above data with the help of a bar graph.

The following data gives the number of loans (in crores of rupees) disbursed by a bank during some years:

The following table shows the interest paid by a company (in lakhs): Draw the bar graph to represent the above information.

The following data shows the average age of men in various countries in a certain year: Represent the above information by a bar graph.

The following data gives the production of foodgrains (in thousand tonnes) for some years: Represent the above data with the help of a bar graph.

The following data gives the amount of manure (in thousand tonnes) manufactured by a company during some years: (i) Represent the above data with the help of a bar graph. (ii) Indicate with the help of the bar graph the year in which the amount of manure manufactured by the the company was maximum. (iii) Choose the correct alternative: The consecutive years during which there was a maximum decrease in manure production: (a) 1994 and 1995 (b) 1992 and 1993 (c) 1996 and 1997 (d) 1995 and 1996