Practice Test | Kullabs.com
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  • Find the arithmetic mean of all odd numbers between 90 and 100.

    95
    50
    20
    80
  • Find the arithmetic mean of the prime numbers between 20 and 50.

    45.25
    30.33
    20.30
    35.85
  • Find the arithmetic mean of squares of first five natural numbers.

    10
    9
    11
    15
  • The mean of 19 number is 1600.If 2000 is added in the numbers.Find the new mean.

    1220
    1330
    1620
    1440
  • The mean of 6 numbers is 20.If one number is deleted, their mean is 15.Find the deleted   number.

    25
    45
    30
    20
  • The mean of 20 numbers is 9.If 3 is added to every number, what will be the mean?

    12
    20
    15
    35
  • If the average of 5 numbers is 10 and the average of other 5 numbers is 20.What is the combined  mean of both 10 numbers?

    15
    20
    25
    30
  • The mean of 17 observation is 20.If the mean of the first 9 observation is 23 and that of the last 9th observation.

    6
    22
    31
    12
  • Find the value of a, if the mean of the following data is 20.

    x 15 17 19 20+a 23
    f 2 3 4 5a 6

    5
    7
    1
    3
  • The mean of the following data is 15.What is the value of A ?

    x 5 A+2 15 20 25
    f 6 A 6 10 5

    6
    8
    2
    10
  • Find the median:

    64,60,70,72,68,80,85,56

    69
    50
    40
    29
  • Find the median:

     

    51,53,49,51,53,50,54,56

    30
    52
    38
    45
  • Find the median:

     47,61,13,34,56,22,8

    51
    34
    65
    10
  • Find the median:

    16,13,10,14,11,12,15

    13
    22
    19
    8
  • Find the median:

    85,77,60,89,91,89,78

    22
    58
    38
    85
  • Find the central term of the following data using formula:

    10,13,15,7,9,11,13,18,16,8

    12
    4
    23
    16
  • Find the central term of the following data using formula:

     8,15,23,14,6,8,3,16,15,18

    11.3
    14.5
    2.4
    9.5
  • Find the median and mode from the following data:

    Wages 35 45 55 65 75
    No.of workers 50 54 85 45 30

    31,40
    65,65
    60,65
    55,55
  • Find the median and mode from the following data:

    Marks 15 25 35 45 55
    No.of student 4 6 10 7 3

    25,25
    35,35
    22,21
    61,25
  • Find the median and mode from the following data:

    x: 2 3 4 5 6 7
    f: 3 8 10 12 16 14

    5,5
    7,8
    2,4
    5,6
  • Find the median of the following data.In the given data, if 37 is replaced by 73, find new median.

    18,37,24,59,41,26,63,45,57,29

    22,21
    51,39
    40,51
    39,43
  • If mean of 11, 15, 17,x+1, 19,x-2 and 3 is 14,what is the mode?

    23
    11
    25
    15
  • 42, 43, 44, 44, (2x+3), 45,45,46,47 are in ascending order.If the median of this data is 45, find the mode.

    28
    45
    11
    16
  • Find the first quartile of the following data:

    40,20,30,10,16,12,8

    8
    13
    18
    10
  • Find the first quartile of the following data:

     16,25,10,30,35,8,12

    6
    19
    3
    10
  • Find the first quartile of the following data:

     50,40,50,60,61,70,49

    21
    72
    28
    49
  • Find the first quartile of the following data:

     17,59,29,35,63,27,44

    28
    33
    21
    27
  • Find the third quartile from the given data:

    50,40,55,60,61,70,49

    61
    25
    16
    66
  • Find the third quartile from the given data:

     

    18,20,17,24,19,21,23

    42
    23
    35
    30
  • Find the first quartile from given data:

    x 10 15 20 25
    f 2 3 4 2

    22
    3
    19
    15
  • In an exam of 35 students: 8 students secured 25 marks,16 students secured  35 marks, 4 secured 45 marks, 4 secured 55 marks and 3 secured 65 marks and find the marks of one-fourth students.

    45
    25
    55
    35
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