Chapters
Chapter 2: Parallel lines and transversals
Chapter 3: Indices and Cube root
Chapter 4: Altitudes and Medians of a triangle
Chapter 5: Expansion formulae
Chapter 6: Factorisation of Algebraic expressions
Chapter 7: Variation
Chapter 8: Quadrilateral : Constructions and Types
Chapter 9: Discount and Commission
Chapter 10: Division of Polynomials
Chapter 11: Statistics
Chapter 12: Equations in one variable
Chapter 13: Congruence of triangles
Chapter 14: Compound interest
Chapter 15: Area
Chapter 16: Surface area and Volume
Chapter 17: Circle : Chord and Arc
Balbharati Balbharati Class 8 Mathematics
Chapter 11: Statistics
Chapter 11: Statistics Exercise Practice Set 11.1 solutions [Pages 69 - 70]
The following table shows the number of saplings planted by 30 students. Fill in the boxes and find the average number of saplings planted by each student.
| No. of saplings (Scores) xi |
No. of students (frequncy) fi |
fi x xi |
| 1 | 4 | 4 |
| 2 | 6 | _______ |
| 3 | 12 | _______ |
| 4 | 8 | _______ |
| N = _________ | ∑fixi = ______ |
Mean `bar "x"` = `square/"N"`
= `square`
The following table shows the electricity (in units) used by 25 families of Eklara village in a month of May. Complete the table and answer the following questions.
| Electricity used (units) `x_i` |
No. of Families (frequency) `f_i` |
`f_ix_i` |
| 30 | 7 | _________ |
| 45 | 2 | __________ |
| 60 | 8 | __________ |
| 75 | 5 | __________ |
| 90 | 3 | __________ |
| N = _________ | `sum f_ix_i` =______ |
(1) How many families use 45 units electricity?
(2) State the score, the frequency of which is 5.
(3) Find N, and `sum f_ix_i`
(4) Find the mean of electricity used by each family in the month of May.
The number of members in the 40 families in Bhilar are as follows:
1, 6, 5, 4, 3, 2, 7, 2, 3, 4, 5, 6, 4, 6, 2, 3, 2, 1, 4, 5, 6, 7, 3, 4, 5, 2, 4, 3, 2, 3, 5, 5, 4, 6, 2, 3, 5, 6, 4, 2. Prepare a frequency table and find the mean of members of 40 families.
The number of Science and Mathematics projects submitted by Model high school, Nandpur in last 20 years at the state level science exibition is:
2 3 4 1 2 3 1 5 4 2 3 1 3 5 4 3 2 2 3 2. Prepare a frequency table and find the mean of the data.
Chapter 11: Statistics Exercise Practice Set 11.2 solutions [Pages 71 - 72]
Observe the following graph and answer the question.
(1) State the type of the graph.
(2) How much is the savings of Vaishali in the month of April?
(3) How much is the total savings of Saroj in the months March and April?
(4) How much more is the total savings of Savita than the total savings of Megha?
(5) Whose savings in the month of April is the least?
The number of boys and girls, in std 5 to std 8 in a Z.P. school is given in the table. Draw a subdivided bar graph to show the data.
(Scale : On Y axis, 1 cm = 10 students)
| Standard | 5th | 6th | 7th | 8th |
| Boys | 34 | 26 | 21 | 25 |
| Girls | 17 | 14 | 14 | 20 |
In the following table number of trees planted in the year 2016 and 2017 in four towns is given. Show the data with the help of subdivided bar graph.
| Town → | Karjat | Wadgoan | Shivapur | Khandala |
| Year ↴ | ||||
| 2016 | 150 | 250 | 200 | 100 |
| 2017 | 200 | 300 | 250 | 150 |
In the following table, data of the transport means used by students in 8th standard for commutation between home and school is given. Draw a subdivided bar diagram to show the data.
(Scale : On Y axis : 1 cm = 500 students)
| Town → | Paithan | Yeola | Shahapur |
| Mean of Communication ↴ | |||
| cycle | 3250 | 1500 | 1250 |
| Bus and Auto | 750 | 500 | 500 |
| On foot | 1000 | 1000 | 500 |
Chapter 11: Statistics Exercise Practice Set 11.3 solutions [Pages 73 - 74]
Show the following information by percentage bar graph.
| Division of standard 8 | A | B | C | D |
| Number of students securring grade A | 45 | 33 | 10 | 15 |
| Total number of students | 60 | 55 | 40 | 75 |
Observe the following graph and answer the questions.
(1) State the type of the bar graph.
(2) How much percent is the Tur production to total production in Ajita'a farm?
(3) Compare the production of Gram in the farms of Yash and Ravi and state whose percentage of production is more and by how much?
(4) Whose percentage production fo Tur is the least?
(5) State production percentages of Tur and gram in Sudha's farm
The following data is collected in a survey of some students of 10th standard from some schools. Draw the percentage bar graph of the data.
| School | 1st | 2nd | 3rd | 4th |
| Inclination towards science stream | 90 | 60 | 25 | 16 |
| Inclination towards commerce stream | 60 | 20 | 25 | 24 |
Chapter 11: Statistics
Balbharati Balbharati Class 8 Mathematics
Textbook solutions for Class 8
Balbharati solutions for Class 8 Mathematics chapter 11 - Statistics
Balbharati solutions for Class 8 chapter 11 (Statistics) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board Balbharati Class 8 Mathematics solutions in a manner that help students grasp basic concepts better and faster.
Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Balbharati textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.
Concepts covered in Class 8 Mathematics chapter 11 Statistics are Concept of Arithmetic Mean, Subdivided Bar Graph/Diagram, Percentage Bar Graph/Diagram.
Using Balbharati Class 8 solutions Statistics exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Balbharati Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board Class 8 prefer Balbharati Textbook Solutions to score more in exam.
Get the free view of chapter 11 Statistics Class 8 extra questions for and can use Shaalaa.com to keep it handy for your exam preparation
