Home
Class 10
MATHS
If bar x, is the mean of x1, x2, x3,…………...

If `bar x`, is the mean of `x_1`, `x_2`, `x_3`,…………..`x_n` (n items) then `overset(n)underset(i = 1)Sigma(X i_-bar X)`=...........

A

0

B

`n bar X`

C

`X / n`

D

`(2 bar X)/n`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    BEYOND PUBLICATION|Exercise EXERCISE|141 Videos

  • SIMILAR TRIANGLES

    BEYOND PUBLICATION|Exercise EXERCISE|143 Videos

  • TANGENTS AND SECANTS TO CIRCLE

    BEYOND PUBLICATION|Exercise EXERCISE|157 Videos

Similar Questions

Explore conceptually related problems

underset(n=1)overset(oo)Sigma(x^(n))/((2n-1)!)=

If the mean of x_1, x_2, ....., x_n is barx then the mean of x_1/a,x_2/a, .... x_n/a is .......

underset(n=1)overset(oo)sum(x^(n))/(n+2)=

The coefficient of x^(n) in the expansion of underset(n=1)overset(oo)Sigma(-1)^(n)((2+3x)^(n))/(n!) is

If x_(n) = omega^(n) + (1)/(omega^(n)) then x_(1) x_(2) x_(3)…, x_(12) =

underset(n to oo)lim 1/n^(3) underset(k=1)overset(n)sum [k^(2)x]=

BEYOND PUBLICATION-STATISTICS-EXERCISE
  1. If the sum of 15 observations is 420 then their mean = ..........

    Text Solution

    |

  2. In "more than ogive curve" we consider in drawing………..

    Text Solution

    |

  3. If bar x, is the mean of x1, x2, x3,…………..xn (n items) then overset(n)...

    Text Solution

    |

  4. Mode can be calculated by = l+((f1-f0)/(2f1-f0-f2))xxh here f1 represe...

    Text Solution

    |

  5. x/4, x, x/5, x/6, x/4 If the mode of (x > 0)is 5 then x=

    Text Solution

    |

  6. If 20 is removed from the data 20, 24, 25, 26,27,28,29,30 then the med...

    Text Solution

    |

  7. Which of the following measures of central tendency is mostly effected...

    Text Solution

    |

  8. The middle most value of a data is called

    Text Solution

    |

  9. If the mean of 4, x, 6,9,9,y and 13 is 8 then the relation between X a...

    Text Solution

    |

  10. The symbol of "implies" is…….

    Text Solution

    |

  11. Range of the data 16,17,15,11,18,23,10,9,10

    Text Solution

    |

  12. The class marks of a class interval is ..........

    Text Solution

    |

  13. If mode of the following data is 7, then the value of 6, 3, 5, 6, 7, 5...

    Text Solution

    |

  14. Which of the following is not a measure of central tendency ?

    Text Solution

    |

  15. For a symmetrical distribution, which is correct ?

    Text Solution

    |

  16. The measure of central tendency which take into account all data terms...

    Text Solution

    |

  17. A data arrange in descending order has 25 observations. Which observat...

    Text Solution

    |

  18. Construction of cumulative frequency table is useful in determining th...

    Text Solution

    |

  19. For a given data with,60 observations, 'the less than ogive' and 'the ...

    Text Solution

    |

  20. For a given data with 50 observations 'the less than ogive' and the mo...

    Text Solution

    |