If  is the arithmetic mean of n observations x1, x2, x3, .....
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    Multiple Choice QuestionsShort Answer Type

    391.

    Find the mean, mode and median of the following data :

    Classes

    Frequency

    0-10

    3

    10-20

    8

    20-30

    10

    30-40

    15

    40-50

    7

    50-60

    4

    60-70

    3
    95 Views
    Answer
    392.

     Find the mean, mode and median of the following data:

    Classes

    Frequency

    0-10

    3

    10-20

    4

    20-30

    7

    30-40

    15

    40-50

    10

    50-60

    7

    60-70

    4
    108 Views
    Answer
    393.

     Find the mean, mode and median of the given data:

    Classes

    Frequency

    10-20

    4

    20-30

    8

    30-40

    10

    40-50

    12

    50-60

    10

    60-70

    4

    70-80

    2
    126 Views
    Answer
    394.

    Find the mean, mode and median of the following data:

    Classes

    Frequency

    0-10

    5

    10-20

    8

    20-30

    15

    30-40

    20

    40-50

    14

    50-60

    8

    60-70

    5
    84 Views
    Answer
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    395.

    Find the mean, mode and median of the following data :

    Classes

    Frequency

    0-20

    6

    20-40

    8

    40-60

    10

    60-80

    12

    80-100

    6

    100-120

    5

    120-140

    3
    106 Views
    Answer
    396.

    Find the mean, mode and median of the following data:

    Classes

    Frequency

    0-10

    6

    10-20

    8

    20-30

    10

    30-40

    15

    40-50

    5

    50-60

    4

    60-70

    2
    114 Views
    Answer

    Multiple Choice QuestionsMultiple Choice Questions

    397. If 10, 13, 15, 18, x + 1, x + 3, 30, 32, 35, 41 are ten observations in an ascenting order with median 24, then value of x is

    • 20

    • 21

    • 22

    • 22

    131 Views
    Answer
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    398. If top enclose straight x is the arithmetic mean of n observations x1, x2, x3, ..........xn then the value of  
    open parentheses straight x subscript 1 minus top enclose straight x close parentheses plus open parentheses x subscript 2 minus top enclose x close parentheses plus.......... left parenthesis x subscript n minus top enclose x right parenthesis space     is
    • zero

    • 1

    • 2

    • 2

    A.

    zero
    376 Views
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    399. If mean of five observations : x, x + 2, x + 4, x + 6, x + 8 is 1 then value of x is

    • 8

    • 9

    • 10

    • 10

    85 Views
    Answer
    400. The formula for finding the median for a grouped or continuous frequency distribution is?
    • Median space equals space l plus open parentheses fraction numerator begin display style straight n over 2 end style minus cf over denominator straight f end fraction close parentheses cross times straight h
    • Median equals open parentheses fraction numerator straight n plus 1 over denominator 2 end fraction close parentheses to the power of th observation

    • Mean of straight n over 2th observation and open parentheses straight n over 2 plus 1 close parentheses to the power of t h end exponent observation

    • Mean of straight n over 2th observation and open parentheses straight n over 2 plus 1 close parentheses to the power of t h end exponent observation

    90 Views
    Answer
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