Home
Class 12
MATHS
A distribution consists of three compone...

A distribution consists of three components with frequencies 300, 200 and 600 having their means 16, 8 and 4 respectively, then the mean of combined distribution is

A

11

B

10

C

9

D

8

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MEASURES OF DISPERSION (STATISTICS)

    AAKASH SERIES|Exercise Practice Exercise|54 Videos

  • MEASURES OF DISPERSION (STATISTICS)

    AAKASH SERIES|Exercise Exercise - I|59 Videos

  • MEAN VALUE THEOREMS

    AAKASH SERIES|Exercise EXERCISE|28 Videos

  • PARABOLA

    AAKASH SERIES|Exercise EXERCISE -3.2 III.|5 Videos

Similar Questions

Explore conceptually related problems

If 6,5,8 and 3 occur with frequencies 4,2,5 and 1 respectively, then the arithmetic mean is

If in a frequency distribution, the mean and median are 21 and 22 respectively, then its mode is approximately

Find the mean deviation from the median for following frequency distribution :

The median and mean of a distribution of 29 and 32 respectively then mode

In a moderately skewed distribution, the values of mean and median are 5 and 6 respectively. The value of mode for such distribution is

For two data sets each of size 5 the variances are given by 4 and 5 and the corresponding means are given to be 2 and 4 respectively. Then find the variance of the combined data.

AAKASH SERIES-MEASURES OF DISPERSION (STATISTICS)-Exercise - II
  1. A student has obtained 75%, 80% and 855 in three subjects. If the mark...

    Text Solution

    |

  2. If bar(x)(1) and bar(x)(2) are the means of two distribution such that...

    Text Solution

    |

  3. A distribution consists of three components with frequencies 300, 200 ...

    Text Solution

    |

  4. The mean marks got by 300 students in the subject of statistics was 45...

    Text Solution

    |

  5. The minimum value (x-6)^(2) + (x + 3)^(2) + (x-8)^(2) + (x + 4)^(2) + ...

    Text Solution

    |

  6. If a variable takes the discrete values alpha + 4, alpha - (7)/(2), al...

    Text Solution

    |

  7. The minimum value |x-6| + |x+3| + |x-8|+|x-4|+|x-3| is

    Text Solution

    |

  8. If in a frequency distribution, the mean and median are 21 and 22 resp...

    Text Solution

    |

  9. The starting value of the model class of a distribution is 20. The fre...

    Text Solution

    |

  10. If M(g,x) is the geometric mean of N x's and M(g,y) is the geometric m...

    Text Solution

    |

  11. If the Arithmetic mean and Geometrical mean of three numbers are equal...

    Text Solution

    |

  12. A car completes the first half of its journey with a velocity V(1) and...

    Text Solution

    |

  13. An automobile driver travels from plane to a hill station 120 Km dista...

    Text Solution

    |

  14. A cyclist covers his first three miles at an average speed of 8 m.p.h....

    Text Solution

    |

  15. If the mean deviation of the number 1, 1+d, 1+2d,….,1+100 d from their...

    Text Solution

    |

  16. The sum of 10 items is 12 and sum of their squares is 18, then standar...

    Text Solution

    |

  17. In a series of 2n observatiobs, half of them equal to a and remaining ...

    Text Solution

    |

  18. If sum(i=1)^(18) (x(i) - 8) = 9 and sum(i=1)^(18) (x(i) - 8)^(2) = 45...

    Text Solution

    |

  19. Mean of 40 terms is 25 and S.D. is 4, then find the sum of the squares...

    Text Solution

    |

  20. Let x(1), x(2),…,x(n) be n observations such that sum x(i)^(2) = 400 a...

    Text Solution

    |