Home
Class 10
MATHS
The mean of the following distribution ...

The mean of the following distribution is 18. The frequency f in the class interval 19-21 is missing
`{:("Class ",11-13,13-15,15-17,17-19,19-21,21-23,23-25),("Frequency "," "3," "6," "9," "13," "f," "5," "4):}`
Determine f .

Text Solution

Verified by Experts

The correct Answer is:
f=8
Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    KUMAR PRAKASHAN|Exercise Practice Thoroughly |9 Videos

  • STATISTICS

    KUMAR PRAKASHAN|Exercise Objective Questions (Fill in the blanks)|5 Videos

  • STATISTICS

    KUMAR PRAKASHAN|Exercise Exercise 14.4|1 Videos

  • SOME AAPLICATIONS OF TRIGONOMETRY

    KUMAR PRAKASHAN|Exercise Objective Questions|24 Videos

  • SURFACE AREAS AND VOLUMES

    KUMAR PRAKASHAN|Exercise TEST YOUR SKILLS|5 Videos

Similar Questions

Explore conceptually related problems

The following distribution shows the daily pocket allowance of children of a locality . The mean pocket allowance is ₹ 18. Find the missing frequency f. {:("Daily pocket allowance (in ₹) ",11-13,13-15,15-17,17-19,19-21,21-23,23-25),("Number of children "," "7," "6," "9," "13," "f," "5," "4):}

The mean of the following frequency distribution of 125 observations is 22.12 . Find the missing frequencies {:(" Class ",0-4,5-9,10-14,15-19,20-24,25-29,30-34,35-39,40-44),("Frequency "," "3," "8," "12," "-," "35," "21," "-," "6," "2):}

For the following distribution, find the sum of the lower limit of the mediaan class and the upper limit of the modal class. {:("Class ",0-5,5-10,10-15,15-20,20-25),("Frequency "," "10," "15," "12," "20," "9):}

Find the missing frequency f for the following data if the mode for the data is 39 : {:("Class ",5-15,15-25,25-35,35-45,45-55,55-65,65-75),("Frequency "," "2," "3," "f," "7," "4," "2," "2):}

In the following frequency distribution, the median class is . . . . . {:("Class ",10-20,20-30,30-40,40-50,50-60),("Frequency "," "12," "18," "25," "15," "10):}

The mode of the following frequency distribution of 165 observations in 34.5 {:(" Class ",5-14,14-23,23-32,32-41,41-50,50-59,59-68),(" Frequency "," "5," "11," "a," "53," "b," "16," "10):} Find the values of a and b .

Find the mean of the following frequency distribution : {:("Class ",0-20,20-40,40-60,60-80,80-100),("Frequency "," "15," "18," "21," "29," "17):}

If the mean of the following distribution is 2.6., then y = . . . . {:(x_(i),1,2,3,4,5),(f_(t)"",4,5,y,1,2):}

KUMAR PRAKASHAN-STATISTICS-Test your Skills
  1. Find the mean of the following frequency distribution : {:("Class...

    Text Solution

    |

  2. The mean of the following distribution is 18. The frequency f in the ...

    Text Solution

    |

  3. Find the mean marks of students for the following distribution. {:(...

    Text Solution

    |

  4. An aircraft has 120 passenger seats. The number of seats occupied du...

    Text Solution

    |

  5. The frequency distribution of the lifetimes of 400 T.V. picture tube...

    Text Solution

    |

  6. During a medical check up to 35 students, their weights were recorded...

    Text Solution

    |

  7. Find the missing frequency f for the following data if the mode for t...

    Text Solution

    |

  8. The following table gives the heights (in cm) of a group of 55 stud...

    Text Solution

    |

  9. Find the mode of the following data : {:("Marks ","Number of student...

    Text Solution

    |

  10. If the mode of the following data is 45. find x and y given sumf(t) =...

    Text Solution

    |

  11. The table below shows the salartes of 280 persons : {:("Salary (in...

    Text Solution

    |

  12. The median of the following data is 50. find the values of p and q if ...

    Text Solution

    |

  13. Size of agriultural holdings in a survey of 200 families is given i...

    Text Solution

    |

  14. If the median of the following data is 240 then find the value of f. ...

    Text Solution

    |

  15. Find the median of the following frequency distribution : {:("Weekl...

    Text Solution

    |

  16. The daily rainfall record of a ciry for 66 days is given in the fol...

    Text Solution

    |

  17. The distribution of heights (in cm) of 96 children is given below :...

    Text Solution

    |

  18. During the medical check-up of 36 students of a class. their weight...

    Text Solution

    |