Ex 14.3 class 9

Board CBSE Textbook NCERT Class Class 9 Subject Maths Chapter Chapter 14 Chapter Name Statistics Exercise Ex 14.3 Number of Questions Solved 9 Category NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.3 Question 1. A survey conducted by an organisation for the cause of illness and death among the women between the ages 15-44 (in years) worldwide, found the following figures (in %) (i) Represent the information given above graphically. (ii) Which condition is the major cause of women’s ill health and death worldwide? (iii) Try to find out, with the help of your teacher, any two factors which play a major role in the cause in (ii) above being the major cause. Solution: (i) We draw the bar graph of this data in the following steps. Note that, the unit in the second column is percentage. • We represent the causes (variable) on the horizontal axis choosing any scale, since width of the bar is not important but for clarity, we take equal widths for all bars and maintain equal gaps in between. Let on cause be represented by one unit. • We represent the female fatality rate (value) on the vertical axis. Here, we can choose the scale as 1 unit = 4%. • To represent our first cause i.e, reproductive health conditions, we draw & rectangle bar with width 1 unit and height 31.8 units. • Similarly, other heads are represented leaving a gap of 1 unit in between two consecutive bars. Now the graph is drawn in figure. (ii) From graph, we observe that ‘reproductive health condit...

These NCERT Solutions for Class 9 Maths Chapter 14 Statistics Exercise 14.3 Question 1. A survey conducted by an organisation for the cause of illness and death among the woman between the age 15 – 44 (in years) worldwide, found the following figures (in %) (i) Represent the information given above graphically. (ii) Which condition is the major cause of woman’s ill health and death worldwide? (iii) Try to find out, with the help of your teacher, any two factors which play a major role in the cause in (ii) above is the major cause. Solution: (i) The information given above represent graphically as: (ii) Reproductive health conditions are the major cause of women’s ill health and death worldwide. (iii) Two factors which play a major role in the cause of women’s ill health and death worldwide are reproductive health condition and neuropsychiatric condition. Question 2. The following data on the number of girls (to the nearest ten) per thousand boys in different sections of Indian society are given below: (i) Represent the information above by a bar graph. (ii) In the classroom discuss what conclusions can be arrived at from the graph. Solution: (i) (ii) Two conclusions arrive from the graph are: (a) Number of girls per thousand boys and most in schedule tribe and least in urban. (b) The average number of girls per thousand boys is less than 950. Question 3. Given below are the seats won by different political parties in the polling outcome of state assembly elections. (i) Dra...

NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.1 are part of NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.1 Ex 14.1 Class 9 Maths Question 1. Give five examples of data that you collect from your day-to-day life. Solution: Following are the five examples which are related to day-to-day life : • Number of girl students in our class. • Number of computer sets in our computer lab. • Telephone bills of our house for last two years. • Number of students appeared in an examination obtained from newspapers. • Number of female teachers in all the schools in a state obtained from the education department. Ex 14.1 Class 9 Maths Question 2. Classify the data in Q.1 above as primary or secondary data. Solution: We have, Primary data: (i), (ii) and (iii) Secondary data: (iv) and (v) NCERT Solutions for Class 9 Maths Chapter 14 Statistics (Hindi Medium) Ex 14.1 NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.2 Ex 14.2 Class 9 Maths Question 1. The blood groups of 30 students of class VIII are recorded as follows A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O Represent this data in the form of a frequency distribution table. Which is the most common and which is the rarest blood group among these students? Solution: The required frequency distribution table is From the above table, we have The most common blood group is O. The rarest blood group is AB. Ex 14.2 Class 9 Maths Question 2. The distance...

Previous Next Access Answers to Maths RD Sharma Solutions for Class 9 Chapter 14 Quadrilaterals Exercise 14.3 Page number 14.38 Question 1: In a parallelogram ABCD, determine the sum of angles ∠C and ∠D. Solution: In a parallelogram ABCD , ∠C and ∠D are consecutive interior angles on the same side of the transversal CD. So, ∠C + ∠D = 180 0 Question 2: In a parallelogram ABCD, if ∠B = 135 0, determine the measures of its other angles. Solution: Given: In a parallelogram ABCD, if ∠B = 135 0 Here, ∠A = ∠C, ∠B = ∠D and ∠A + ∠B = 180 0 ∠A + 135 0 = 180 0 ∠A = 45 0 Answer: ∠A = ∠C = 45 0 ∠B = ∠D = 135 0 Question 3: ABCD is a square. AC and BD intersect at O. State the measure of ∠AOB. Solution: We know, diagonals of a square bisect each other at right angle. So, ∠AOB = 90 0 Question 4: ABCD is a rectangle with ∠ABD = 40 0. Determine ∠DBC. Solution: Each angle of a rectangle = 90 o So, ∠ABC = 90 0 ∠ABD = 40 0 (given) Now, ∠ABD + ∠DBC = 90 0 40 0 + ∠DBC = 90 0 or ∠DBC = 50 0 . RD Sharma Solutions for Class 9 Maths Chapter 14 Quadrilaterals Exercise 14.3 1. Conditions for a Quadrilateral to be a Parallelogram 2. Important theorems statements: • A quadrilateral is a parallelogram if its opposite sides are equal. • A quadrilateral is a parallelogram if its opposite angles are equal. • If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram. • A quadrilateral is a parallelogram if its one pair of opposite sides are equal and parallel. • Propert...

NCERT Solutions for Class 9 Maths Exercise 14.3 book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE board exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 9 Maths chapter wise NCERT solution for Maths Book for all the chapters can be downloaded from our website and myCBSEguide mobile app for free. NCERT solutions for Class 9 Maths Statistics NCERT Solutions for Class 9 Mathematics Statistics 1. A survey conducted by an organization for the cause of illness and death among the women between the ages 15 – 44 (in years) worldwide, found the following figures (in %): (i) Represent the information given above graphically. (ii) Which condition is the major cause of women’s ill health and death worldwide? (iii) Try to find out, with the help of your teacher, any two factors which play a major role in the cause in (ii) above being the major cause. Ans. (i) We represent the given information in the form of a bargraph. We construct the bar diagram through the following steps: Step 1. Draw two perpendicular axes OX and OY on a plain paper. Step 2. Along OX mark “Causes” and along OY “Female Fertility rate (%)”. Step 3. Along OX, choose suitable width for each bar. Step 4. Along OY, choose an appropriate scale and mark the Female Fertility rate (%). Scale chosen: On y-axis: 1 large division, i.e. 1 cm = 5% (ii) From the bar graph we obs...

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