Home
Class 9
MATHS
Find the mean of the following distribut...

Find the mean of the following distribution: x: 4 6 9 10 15 f: 5 10 10 7 8

Text Solution

Verified by Experts

Added: `x_i=4,6,9,10,15`
`f_i=5,10,10,7,8`
Mean`=(sumx_i\f_i)/(sumf_i)`
Mean`=((4xx5)+(6xx10)+(9xx10)+(10xx7)+(15xx8))/(5+10+10+7+8)`
Mean`=360/40`
Mean`=9`
Hence, the mean is `9`.
Promotional Banner

Topper's Solved these Questions

  • LINES AND ANGLES

    RD SHARMA|Exercise All Questions|186 Videos

  • NUMBER SYSTEM

    RD SHARMA|Exercise All Questions|130 Videos

Similar Questions

Explore conceptually related problems

Find the mean of the following distribution: 4 6 9 10 15 5 10 10 7 8

Find the mean of the following distribution: 10 30 50 70 89 7 8 10 15 10

Find the mean of the following distribution: x: 10 30 50 70 89 f: 7 8 10 15 10

Find the mean of the following distribution: {:(x,10,30,50,70,90),(f,7,5,10,3,5):}

Calculate the mean for the following distribution: 5 6 7 8 9 4 8 14 11 3

Calculate the mean for the following distribution: x : 5 6 7 8 9 f : 4 8 14 11 3

Mode of the following frequency distribution X=4,5,6,7,8;f=6,7,10,8,3

Find the value of if the mean of the following distribution is 7.5. 3 5 7 9 11 13 6 8 15 8 4

Calculate the mean deviation about mean of the following distribution: {:(x i:,3,9,17,23,27),(fi:,8,10,12,9,5):}

Calculate mean deviation from the median for the following distribution: x_(i):10,15,20,25,30,35,40,45f_(i):,7,3,8,5,6,8,4,9

RD SHARMA-MEASURES OF CENTRAL TENDENCY-All Questions
  1. The mean of 16 items was found to be30. On rechecking, it was found th...

    Text Solution

    |

  2. The mean monthly salary of 10 members of a group is Rs. 1445, one mo...

    Text Solution

    |

  3. Find the mean of the following distribution: x: 4 6 9 10 ...

    Text Solution

    |

  4. Following table shows the weights of 12 students: Weight (in kgs): ...

    Text Solution

    |

  5. If the mean of n observation a x1, a x2, a x3, ,a xn is a barX , sho...

    Text Solution

    |

  6. If the mean of 6,4,7 p and 10 is 8, find the value of p.

    Text Solution

    |

  7. Find the sum of the deviations of the variate values 3,4,6,8, 14 from ...

    Text Solution

    |

  8. The mean of 40 observations was 160. It was detected on rechecking t...

    Text Solution

    |

  9. If the heights of 5 persons are 144cm, 152cm, 151cm, 158cm and 155cm...

    Text Solution

    |

  10. Find the arithmetic mean of first 6 natural numbers.

    Text Solution

    |

  11. Find the arithmetic mean of first ten odd natural numbers

    Text Solution

    |

  12. The weights (in kg) of 15 students are: 31,35,27,29,32,43,37,41,34,2...

    Text Solution

    |

  13. Find the median of the following data: 19,25,59,48,35,31,30,32,51. If ...

    Text Solution

    |

  14. Find the mode from the following data: 110,120,130,120,110,140,130,120...

    Text Solution

    |

  15. If the heights of 5 persons are 144cm, 152cm, 151cm, 158cm and 155c...

    Text Solution

    |

  16. Find the arithmetic means of first 6 natural numbers.

    Text Solution

    |

  17. Find the arithmetic mean of first ten odd natural numbers.

    Text Solution

    |

  18. If the mean of n observations ax1, ax2, ax3, ...., axn is aX show th...

    Text Solution

    |

  19. If the mean of 6, 4, 7, p and 10 is 8, find the value of p

    Text Solution

    |

  20. Find the sum of the deviations of the variate values 3, 4, 6, 8, 14 ...

    Text Solution

    |