Home
Class 12
MATHS
Calculate mean deviation about mean from...

Calculate mean deviation about mean from the following data: `x_i :` 3 9 17 23 27 `f_i :` 8 10 12 9 5

A

`7.15`

B

`7.09`

C

`8.05`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B


mean `= barx = 1/(N) (sumf_(i)x_(i)) = (600)/(44) = 15`
mean deviation `= M.D. = (1)/(N) sumf_(i)|x_(i) -15|`
`= (312)/(44) = 7.09`
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 5

    CAREER POINT|Exercise Part (C) (MATHS)|30 Videos
  • MOCK TEST 7

    CAREER POINT|Exercise PART (B) - CHEMISTRY|30 Videos

Similar Questions

Explore conceptually related problems

Calcualte the mean deviation about mean for the following data:

Calculate the mean deviation about median for the following data:

Calculate the mean deviation about median for the following data :

Find the mean deviation about the mean for the following data :

Find the mean deviation about the mean for the following data :

Find the mean deviation about the mean for the following data.

Calculate mean and standard deviation from the following data:

CAREER POINT-MOCK TEST 6-Part (C) (MATHS)
  1. The number of zeros at the end of 99^(100) - 1 is -

    Text Solution

    |

  2. If A is a square matrix of order 3 such that ||A =3, then find the val...

    Text Solution

    |

  3. Let f(x)=|{:(2cos^(2)x,,sin2x,,-sinx),(sin2x,,2sin^(2)x,,cosx),(sinx,,...

    Text Solution

    |

  4. In a three-dimensional coordinate system, P ,Q ,a n dR are images o...

    Text Solution

    |

  5. Let vec abe a unit vector and vec ba non-zero vector not parallel to v...

    Text Solution

    |

  6. The sides of a triangle have the combined equation x^2-3y^2-2x y+8y-4=...

    Text Solution

    |

  7. If (3+x^(2008)+x^(2009))^(2010)=a0+a1x+a2x^2++an x^n , then the value ...

    Text Solution

    |

  8. Given that a right angled trapezium has an inscribed circle. Prove tha...

    Text Solution

    |

  9. Find (dy)/(dx)a tx=-1,w h e n(sin"y")^(sin(pi/2x))+(sqrt(3))/2sec^(-1)...

    Text Solution

    |

  10. If e^(cos x) -e^(-cos x) = 4, then the value of cos x, is

    Text Solution

    |

  11. If -1 lt x lt 0 then sin^(-1) x equals-

    Text Solution

    |

  12. A circle of radius 2 lies in the first quadrant and touches both the a...

    Text Solution

    |

  13. Consider the set the of hyperbola xy = k, k in R. Let e(1) be the ecce...

    Text Solution

    |

  14. A man throws a fair coin number of times and gets 2 points for each he...

    Text Solution

    |

  15. Calculate mean deviation about mean from the following data: xi : ...

    Text Solution

    |

  16. The number of orded 4-tuples (x,y,z,w) where x,y,z,w in[0,10] which sa...

    Text Solution

    |

  17. Let An be the area bounded by the curve y=(tanx)^n and the lines x=0,y...

    Text Solution

    |

  18. A curve having the condition that the slope of the tangent at some poi...

    Text Solution

    |

  19. The domain of the function y=sqrt(log10(log10x)-log10(4-log10x)-log10 ...

    Text Solution

    |

  20. is continuous at x = 0, then

    Text Solution

    |