Home
Class 9
MATHS
The class marks of a frequency distribut...

The class marks of a frequency distribution are given as follows : 15, 20, 25, The class corresponding to the class mark 20 is :

A

12.5-17.5

B

17.5-22.5

C

18.5-21.5

D

19.5-20.5

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    MODERN PUBLICATION|Exercise EXERCISE|239 Videos

  • QUADRILATERALS

    MODERN PUBLICATION|Exercise EXERCISE|133 Videos

  • SURFACE AREAS AND VOLUMES

    MODERN PUBLICATION|Exercise EXERCISE|228 Videos

Similar Questions

Explore conceptually related problems

The class mark of the class 90-120 is

The class mark of the class 100-120 is

In a frequency distribution, the mid value of a class is 10 and width of the class if 6. the lower limit of the class is

Let L be the lower class boundary of a class in a frequency distribution and m be the mid point of the class. Which one of the followng is the upper class boundary of the class?

Let m be the mid-point and l be the upper class limit of a class in a continuous frequency ditribution. The lower class limit of the class is :

The measure or width of a class interval10-20 is :

The class marks of a distributions are: 37,42,47,52,57,62,67,72,77,82,87,92 find the class size, the limits and true class limits.

The width of each of five continuous classes in a frequency distibution is 5 and the lower class limit of the lowest class is 10. the upper class limit of the highest class is

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : : Make a frequency distribution table for this data, taking class width 5 and one of the class interval as 5— 10

MODERN PUBLICATION-STATISTICS-EXERCISE
  1. The width of each of five continuous classes in a frequency distibutio...

    Text Solution

    |

  2. Let m be the mid-point and l be the upper class limit of a class in a ...

    Text Solution

    |

  3. The class marks of a frequency distribution are given as follows : 15,...

    Text Solution

    |

  4. In the class intervals 10-20, 20-30, the number 20 is included in.

    Text Solution

    |

  5. A grouped frequency table with class intervals of equal sizes using 25...

    Text Solution

    |

  6. A grouped frequency distribution table with classes of equal sizes usi...

    Text Solution

    |

  7. To draw a histogram to represent the following frequency distribution ...

    Text Solution

    |

  8. The mean of five numbers is 30. If one number is excluded, their mean ...

    Text Solution

    |

  9. If the mean of the observations : x, x + 3, x + 5, x + 7, x + 10 is 9,...

    Text Solution

    |

  10. If barx represents the mean of n observations x1, x2,…….,xn , then val...

    Text Solution

    |

  11. If each observation of the data is increased by 5, then their mean

    Text Solution

    |

  12. The mean of 100 observations is 50. If one of the observations which w...

    Text Solution

    |

  13. There are 50 numbers. Each number is subtracted from 53 and the mean o...

    Text Solution

    |

  14. The mean of 25 observations is 36. Out of these observationsif the mea...

    Text Solution

    |

  15. The median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54, 84 is

    Text Solution

    |

  16. Median of the following numbers : 4, 4, 5, 7, 6, 7, 7, 12, 3 is

    Text Solution

    |

  17. Mode of the data 15, 14, 19, 20, 14, 15, 1 6, 14, 15, 18, 14, 19, 15, ...

    Text Solution

    |

  18. For drawing a frequency polygon of a continuous frequency distribution...

    Text Solution

    |

  19. If the mean of x and 1/x is M, then the mean of x^2 and 1//x^2 is

    Text Solution

    |

  20. The mean of the ungrouped data is given by

    Text Solution

    |