MCQ Questions | Class 9 Maths Chapter 14 | Statistics with Answers

MCQ | Statistics Class 9

Check the below NCERT MCQ Questions for Class 9 Maths Chapter 14 Statistics with Answers Pdf free download. MCQ Questions for Class 9 Maths with Answers were prepared based on the latest exam pattern. We have Provided Statistics Class 9 Maths MCQs Questions with Answers to help students understand the concept very well.

Objective Question | NCERT Maths Class 9

NCERT Solutions Class 9 Maths
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	9th
Subject:	Maths
Chapter:	14 Part-2
Chapters Name:	Statistics
Medium:	English

Ncert Solutions for Class 9 Maths | Objective Type Questions

You can refer to NCERT Solutions for Class 9 Maths Chapter 14 Statistics to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Statistics | Class 9 Maths | NCERT Solutions

Q1.	class 9 maths solutions Let m be the mid-point and 1 be the lower class limit of a class in a continuous frequency distribution. The upper class limit of the class is:
	A. 2m + l
	B. 2m – l
	C. m – l
	D. m – 2l

Ans: 2m – l

Q2.	class 9 ncert maths book The class marks of a frequency distribution are given as follows: 15, 20, 25, … The class corresponding to the class mark 15 is:
	A. 12.5 – 17.5
	B. 17.5 – 22.5
	C. 18.5 – 21.5
	D. 19.5 – 20.5

Ans: 12.5 – 17.5

Q3.	class 9 ncert maths book pdf In the class intervals 10-20, 20-30, the number 20 is included in:
	A. 10-20
	B. 20-30
	C. both the intervals
	D. none of these intervals

Ans: 20-30

Q4.	class 9 ncert maths book pdf download A grouped frequency table with class intervals of equal sizes using 250-270 (270 not included in this interval) as one of the class interval is constructed for the following data: 268, 220, 368, 258, 242, 310, 272, 342, 310, 290, 300, 320, 319, 304,402, 318, 406, 292, 354, 278, 210, 240, 330, 316, 406, 215, 258, 236. The frequency of the class 370-390 is:
	A. 0
	B. 1
	C. 3
	D. 5

Ans: 0

Q5.	class 9 ncert maths chapter 14 A grouped frequency distribution table with classes of equal sizes using 63-72 (72 included) as one of the class is constructed for the following data: 30, 32, 45, 54, 74, 78, 108, 112, 66, 76, 88, 40, 14, 20, 15, 35, 44, 66, 75, 84, 95, 96, 102, 110, 88, 74, 112, 14, 34, 44. The number of classes in the distribution will be:
	A. 9
	B. 10
	C. 11
	D. 12

Ans: 10

Q6.	class 9 ncert maths chapter 14 exercise To draw a histogram to represent the following frequency distribution: the adjusted frequency for the class 25-45 is:
	A. 6
	B. 5
	C. 3
	D. 2

Ans: 2

Q7.	class 9 ncert maths Statistics pdf Let m be the mid-point and 1 be the lower class limit of a class in a continuous frequency distribution. The upper class limit of the class is:
	A. 2m + l
	B. 2m – l
	C. m – l
	D. m – 2l

Ans: 2m – l

Q8.	class 9 ncert maths solutions The ratio of sum of observations and total number of observations is called:
	A. Mean
	B. Median
	C. Mode
	D. Central tendency

Ans: Mean

Q9.	class 9 ncert maths solutions chapter 14 The mean of x+2, x+3, x+4 and x-2 is:
	A. (x+7)/4
	B. (2x+7)/4
	C. (3x+7)/4
	D. (4x+7)/4

Ans: (4x+7)/4

Q10.	mcq for class 9 maths chapter 14 Mode of a set of observations is the value which
	A. is the sum of the observations
	B. occurs most frequently
	C. is the mean of the middle two observations
	D. divides the observations into two equal parts

Ans: occurs most frequently

Q11.	mcq for class 9 maths Statistics In order to draw a frequency polygon by using a histogram, which of the following statements is incorrect?
	A. Obtain the mid-points of three class- intervals of highest frequency on Y-axis, one adjacent to the first on its right and one adjacent to the last, on its left.
	B. Obtain the frequency distribution and draw a histogram representing it.
	C. Join these mid-points of the adjacent rectangles of the histogram by dotted line
	D. Obtain the mid points of the upper horizontal side of each rectangle.

Ans: Obtain the mid-points of three class- intervals of highest frequency on Y-axis, one adjacent to the first on its right and one adjacent to the last, on its left.

Q12.	mcq questions for class 9 maths chapter 14 The mean of five numbers is 30. If one number is excluded, their mean becomes 28. the excluded number is:
	A. 28
	B. 30
	C. 35
	D. 38

Ans: 38

Q13.	mcq questions for class 9 maths ncert chapter 14 If \(\bar { x } \) represents the mean of n observations x₁, x₂, …, x_n, then value of \(\sum_{i=1}^{n}\left(x_{i}-\bar{x}\right)\) is:
	A. -1
	B. 0
	C. 1
	D. n – 1

Ans: 0

Q14.	mcq questions for class 9 maths Statistics with answers If each observation of the data is increased by 5, then their mean
	A. remains the same
	B. becomes 5 times the original mean
	C. is decreased by 5
	D. is increased by 5

Ans: is increased by 5

Q15.	mcq questions for class 9 maths Statistics with answers pdf Let \(\bar { x } \) be the mean of x₁, x₂, …, x_n and y the mean of y₁, y₂, …, y_n. If z is the mean of x₁, x₂, …. x_n, y₁, y₂, …, y_n, then z is equal to
	A. \(\bar {x}+\bar{y} \)
	B. \(\frac{\bar {x}+\bar{y}}{2}\)
	C. \(\frac{\bar {x}+\bar{y}}{n}\)
	D. \(\frac{\bar {x}+\bar{y}}{2n}\)

Ans: \(\frac{\bar {x}+\bar{y}}{2}\)

Q16.	mcq questions for class 9 maths with answers pdf The median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54, 84 is
	A. 45
	B. 49.5
	C. 54
	D. 56

Ans: 54

Q17.	ncert maths class 9 chapter 14 For drawing a frequency polygon of a continous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abcissae are respectively:
	A. upper limits of the classes
	B. lower limits of the classes
	C. class marks of the classes
	D. upper limits of preceding classes

Ans: class marks of the classes

Q18.	ncert maths class 9 chapter 14 exercise Mode of the data 15, 14, 19, 20, 16, 15, 16, 14, 15, 18, 14, 19, 16, 17, 16 is
	A. 14
	B. 15
	C. 16
	D. 17

Ans: 16

Q19.	ncert maths class 9 chapter 14 examples The mean of 25 observations is 26. Out of these observations if the mean of first 13 observations is 22 and that of the last 13 observations is 30, the 13th observation is:
	A. 23
	B. 26
	C. 28
	D. 30