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CBSE Questions for Class 9 Maths Statistics Quiz 1 - MCQExams.com

If x is the average(arithmetic mean) of 5 consecutive odd integers, what is the median of integers?
  • 0
  • 1
  • x2
  • x
If x and y are both prime numbers such that x < y < 50 , then the maximum possible range of the data 4,6,8, x,y,16 is 
  • 44
  • 45
  • 48
  • 47
Upper limit of class interval 7585 is:
  • 10
  • 10
  • 75
  • 85
Which two class has same frequency ?
  • 010 & 1020
  • 1020 & 4050
  • both
  • none of this
Which class has lowest frequency ?
  • 010
  • 1020
  • 2030
  • 3040
The difference between upper and lower limit is called 
  • group
  • class marks
  • class size
  • class internal
The class mark of 95100 is
  • 100
  • 97.5
  • 95
  • 95.5
In the class interval 3040, 30 is
  • Frequency
  • Range
  • Upper limit
  • Lower limit
Data available in unorganized form is called
  • out comes
  • raw data
  • class
  • frequency
Size of the class 180195 is
  • 180
  • 195
  • 15
  • 15
In the class interval 3546, the lower limit is _____
  • 35
  • 38
  • 40
  • 43
The mid-value of 2030 is _____
  • 23
  • 22
  • 25
  • 26
The mean of x,y,z is y, then x+z=
  • y
  • 2y
  • 3y
  • zy
Consider the data  :  2,3,2,4,5,6,4,2,3,3,7,8,2,2. The frequency of 
2 is ..............
  • 3
  • 4
  • 5
  • 6
The mid-point of a class intervals is called:
  • class interval
  • class mark
  • class limit
  • upper limit
The formula Upper class limit+Lower class limit2 is known as
  • Class mark
  • Class interval
  • Upper limit
  • Lower limit
A class interval of a data has 15 as the lower limit and 25 as the size then the class mark is :
  • 26.5
  • 27
  • 27.5
  • None of these
010,1020,2030...  so on are the classes, the lower boundary of the class 2030 is _____
  • 20
  • 21
  • 18
  • 22
Which one of the following groups has different class size from others?
  • 120125
  • 243249
  • 141.5146.5
  • 315.5320.5
Lower class limit of 1518 is _____
  • 15
  • 18
  • 15 or 18
  • None of these
The number of times a particular item occurs in a class interval is called its:
  • mean
  • frequency
  • cumulative frequency
  • none of these
In the class interval 3546, the lower limit is _____
  • 35
  • 46
  • Can't determine
  • None of these
In an examination, 10 students scored the following marks in Mathematics: 35,19,28,32,63,02,47,31,13,98. Its range is
  • 2
  • 96
  • 98
  • 50
The mean of x+3,x+5,x+7,x+9 and x+11 is
  • 2x+7
  • x+8
  • x+7
  • None of these
What is the difference of frequencies of the intervals  30-40 and 40-50 ?

97960_1c87fb78f3db4748b02aa5e680d766e3.png
  • 5
  • 20
  • 15
  • 25
The range of the data 7,13,6,25,18,20,16 is _____
  • 13
  • 19
  • 20
  • 25
Construct a frequency distribution table for the data, taking class-intervals 4-6, 6-8, ............., 14-16.
11.5
 4.5
 7.4
 9.8
 4.6
14.2
  6.6
15.5
6.3
  6
5.3
8.25
 6.4
15.3
  4.3
14.4
7.8
8.3
8.4
6.5
8.9
11.7
 4.7
12.2
9.2
12.5
15.2
5.8
10.8
9.9
9.4
7.7
10.5
15.8
  8.9
10.5
12.7
 8.8
10.1
  5.5

  • C.I.       
    Tally Marks.       Frequency
     4-6
     6-8
     8-10
    10-12
    12-14
    14-16
    ||||||
    |||||||
    ||||||||
    |||||
    |||
    |||||
     7
     8
    10
     6  
     3
     6
  • C.I.       
    Tally Marks.       Frequency
     4-6
     6-8
     8-10
    10-12
    12-14
    14-16
    ||||||
    |||||||
    ||||||||
    |||||
    |||
    |||||
     7
     10
     8
     6  
     3
     6
  • C.I.       
    Tally Marks.       Frequency
     4-6
     6-8
     8-10
    10-12
    12-14
    14-16
    ||||||
    |||||||
    ||||||||
    |||||
    |||
    |||||
     6
     8
    10
     8  
     3
     3
  • None of these
The difference between the greatest and the least value of the observations is known as 
  • M.D.
  • S.D.
  • Range
  • Variance
How many articles have cost Rs. 50 ?
Cost (in Rs.) :102020303040405050606070
Frequency :22 1835 115 3822
  • 22
  • 38
  • 35
  • 115
Class mark of a class is obtained by using
  • Upper limit
  • 12 [Upper limit - Lower limit]
  • 12 [Upper limit + lower limit]
  • 12 [Upper limit + Lower limit] 1
0:0:1


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