CBSE Class 11 Mathematics Chapter 15 Statistics Multiple Choice Questions with Answers. MCQ Class 11 Mathematics Statistics with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 11 Mathematics Statistics MCQs with Answers to know their preparation level.
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MCQ Class 11 Mathematics Statistics with Answers - Set - 4
Question 1:
Mean deviation of the data a, a + d, a + 2d,……., a + 2nd from the mean is equal to
(a) n(n + 1) |d | /2n+1
(b) n(n + 1) |d | /2n+1
(c) (n + 1) |d | /2n
(d) None of these
Correct Answer – (A)
Question 2 :
Mean of 20 observations is 15.5 Later it was found that the observation 24 was misread as 42. The corrected mean is:
(a) 14.2
(b) 14.8
(c) 14.0
(d) 14.6
Correct Answer – (D)
Question 3 :
Mean score of six students in an examination is 48. If the individual scores of five students be 45, 58, 50, 54 and 49, then the score of the sixth student is equal to:
(a) 32
(b) 34
(c) 40
(d) 42
Correct Answer – (A)
Question 4 :
The median of a set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set
(a) remains the same as that of the original set
(b) is increased by 2
(c) is decreased by 2
(d) is two times the original median.
Correct Answer – (A)
Question 5 :
The mean of 100 observations is 50 and their standard deviation is 5. The sum of all squares of all the observations is
(a) 50000
(b) 250000
(c) 252500
(d) 255000
Correct Answer – (C)
MCQ Class 11 Mathematics Statistics with Answers
Question 6 :
Variance of the numbers 3, 7, 10,18, 22 is equal to
(a) 12
(b) 6.4
(c) 49.2
(d) 49.2
Correct Answer – (D)
Question 7 :
If mean of the n observations x1, x2, x3,… xn be x– , then the mean of n observations 2x1 + 3, 2x2 + 3, 2x3 + 3, …., 2xn + 3 is
(a) 3x + 2
(b) 2x + 3
(c) x + 3
(d) 2x
Correct Answer – (B)
Question 8 :
Consider the following statements :
(A) Mode can be computed from histogram
(B) Median is not independent of change of scale
(C) Variance is independent of change of origin and scale.
Which of these is / are correct ?
(a) (A), (B) and (C)
(b) only (B)
(c) only (A) and (B)
(d) only (A)
Correct Answer – (C)
Question 9 :
In a class of 100 students there are 70 boys whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the average of the girls?
(a) 73
(b) 65
(c) 68
(d) 74
Correct Answer – (B)
Question 10 :
In a frequency distribution, the mid value of a class is 10 and the width of the class is 6. The lower limit of the class is
(a) 6
(b) 7
(c) 8
(d) 12
Correct Answer – (B)
- NCERT Solutions Class 11 Mathematics Statistics with Answers : Exercise 15.1
- NCERT Solutions Class 11 Mathematics Statistics with Answers : Exercise 15.2
- NCERT Solutions Class 11 Mathematics Statistics with Answers : Exercise 15.3
- NCERT Solutions Class 11 Mathematics Statistics with Answers : Exercise 15.4
- NCERT Solutions Class 11 Mathematics Statistics with Answers : Exercise 15 Misc
- NCERT Solutions Class 11 Mathematics Statistics with Answers : Exercise 15.1
- NCERT Solutions Class 11 Mathematics Statistics with Answers : Exercise 15.2
- NCERT Solutions Class 11 Mathematics Statistics with Answers : Exercise 15.3
- NCERT Solutions Class 11 Mathematics Statistics with Answers : Exercise 15 Misc
- NCERT Solutions Class 11 Mathematics Textbook download
