Home
Class 7
MATHS
Let x, y, z be three observations. The m...

Let x, y, z be three observations. The mean of these observations is

A

`(x xxyxxz)/(3)`

B

`(x+y+z)/(3)`

C

`(x-y-z)/(3)`

D

`(x xx y+z)/(3)`

Text Solution

Verified by Experts

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • DATA HANDLING

    NCERT EXEMPLAR|Exercise EXERCISE(FILL IN THE BLANKS)|15 Videos

  • DATA HANDLING

    NCERT EXEMPLAR|Exercise EXERCISE(TRUE OR FALSE)|18 Videos

  • DATA HANDLING

    NCERT EXEMPLAR|Exercise EXAMPLES|9 Videos

  • COMPARING QUANTITIES

    NCERT EXEMPLAR|Exercise THINK AND DISCUSS|24 Videos

  • EXPONENTS AND POWERS

    NCERT EXEMPLAR|Exercise EXERCISE|136 Videos

Similar Questions

Explore conceptually related problems

The mean of first two observations is 6 & the mean of first three observations is 7. The third observation is-

Let p be the mean of m observations and q be the mean of n observations, where p lt q . If the combined mean of (m + n) observations is c, then which one of the following is correct?

Knowledge Check

  • The mean of first three observations is 15 and the mean of next two observation is 20. The mean of all five observations is-

    A
    45
    B
    15
    C
    17
    D
    40

  • The mean of 53 observations is 36. Out of these observations, the mean of first 27 observations is 32 and that of the last 27 observations is 40. The 27th observation is

    A
    23
    B
    36
    C
    38
    D
    40

  • Assertion : If the mean of five observations x, x + 2, x + 4, x + 6, x + 8 is 11, then mean of last three observations is 8. Reason : Mean of n observations is equal to Sum of observations upon Number of observations

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false but reason is true.

    • Similar Questions

    Explore conceptually related problems

    Mean of 35 observations is 75 .The mean of first 18 observations is 70 and the mean of last 18 observations is 80 .Then the 18^(th ) observation is

    Mean of 35 observations is 75 .The mean of first 18 observations is 70 and the mean of last 18 observations is 80 .Then the 18^(" th ") observation is

    If the mean of 10 observations is 15, then the sum of these observations is

    The mean of 25 observation is 36. Out of these observations, if the mean of first 13 observations is 32 and that of the last 13 observations is 40, the 13th observation is

    The mean of 10 observations is 12. If mean of first 6 observations is 13. Find the mean of remaining 4 observations.

    Home
    Profile