Below you will find MCQ Questions of Chapter 14 Statistics Class 9 Maths Free PDF Download that will help you in gaining good marks in the examinations and also cracking competitive exams. These Class 9 MCQ Questions with answers will widen your skills and understand concepts in a better manner.
MCQ Questions for Class 9 Maths Chapter 14 Statistics with answers
1. Mohan has marks of 92, 85, and 78 in three mathematics tests. In order to have an average of exactly 87 for the four math tests, he should obtain
(a) 93 marks
(b) 90 marks
(c) 92 marks
(d) 91 marks
► (a) 93 marks
2. In an examination, ten students scored the following marks: 60, 58, 90, 51, 47, 81, 70, 95, 87, 99. The range of this data is
(a) 60
(b) 51
(c) 61
(d) 52
► (d) 52
3. In a grouped frequency distribution, the class intervals are 1-20, 21-40, 41-60, . . , then the class width is
(a) 10
(b) 10.5
(c) 15
(d) 20
► (d) 20
4. The range of the data 20, 8, 20, 18, 16, 15, 30, 12, 22, 6, 11, 17, 25, 32, 10, 19 is
(a) 15
(b) 16
(c) 18
(d) 26
► (d) 26
5. The consecutive class marks of a data having continuous class intervals having class width as 5, have a gap of ________ between them.
(a) 2.5
(b) 4.5
(c) 5
(d) 10
► (c) 5
6. In an examination, ten students scored the following marks: 60, 58, 90, 51, 47, 81, 70, 95, 87, 99. The range of this data is
(a) 52
(b) 51
(c) 81
(d) 60
► (a) 52
7. Class size for the following distribution: 0 – 0.25, 0.25 – 0.50, 0.50 – 0.75 is
(a) 10
(b) 0. 25
(c) 50
(d) 2.5
► (b) 0. 25
8. For a given data, the difference between the maximum and minimum observation is known as its
(a) class
(b) class mark
(c) range
(d) class limit
► (c) range
9. Which of the following variables are discrete ? 1. Size of shoes, 2. Number of pages in a book, 3. Distance travelled by a train, 4. Time
(a) 1 and 2
(b) 1 and 4
(c) 1 and 3
(d) 2 and 4
► (a) 1 and 2
10. 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.
► (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.
11. To analyse the election results, the data is collected from a newspapers. The data thus collected is known as
(a) secondary data
(b) raw data
(c) grouped data
(d) primary data
► (a) secondary data
12. A graphical representation of a frequency distribution in the form of rectangles with class interval as bases and heights proportional to corresponding frequencies such that there is no gap between any two successive rectangles is called a
(a) Frequency polygon
(b) Histogram
(c) Bar graph
(d) Pie chart
► (b) Histogram
13. What is the median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54, 84?
(a) 54
(b) 53
(c) 55
(d) 51
► (a) 54
14. A student collects information about the number of school going children in a locality consisting of a hundred households. The data collected by him is
(a) Arrayed data
(b) Grouped data
(c) Primary data
(d) Secondary data
► (c) Primary data
15. In a frequency distribution, the class-width is 4 and the lower limit of first class is 10. If there are six classes, the upper limit of last class is
(a) 32
(b) 34
(c) 26
(d) 30
► (b) 34
16. Class mark of a class interval U-L is
(a) U+L/2
(b) U-L/2
(c) U-L
(d) 2(U+L)
► (a) U+L/2
17. The class size of a distribution is 25 and the first class interval is 200-224. Then, the class marks of first two class intervals are
(a) 237, 287
(b) 212, 237
(c) 237, 262
(d) 212, 262
► (b) 212, 237
18. In a grouped frequency distribution, the class intervals are 0-10, 10-20, 20-30, .., then the class width is
(a) 10
(b) 15
(c) 20
(d) 30
► (a) 10
19. The class size of a distribution is 25 and the first class interval is 200-224. Then, the class marks of first two class intervals are
(a) 237, 287
(b) 237, 262
(c) 212, 262
(d) 212, 237
► (d) 212, 237
20. For a given data, the difference between the maximum and minimum observation is known as its
(a) class
(b) range
(c) class mark
(d) class limit
► (b) range
21. The mean of first four prime numbers is
(a) 4
(b) 4.5
(c) 3.75
(d) 4.25
► (d) 4.25
22. The mean for counting numbers through 100 is
(a) 47.5
(b) 51
(c) 50.5
(d) 49.5
► (c) 50.5
Hope the given MCQ Questions will help you in cracking exams with good marks. These Statistics MCQ Questions will help you in practising more and more questions in less time.