Home
Class 9
MATHS
A grouped frequency table with class int...

A grouped frequency table with class intervals of equal sizes using 250 -270 (270 not included in this interval) as one of the class interval is constructed observations for the following data : 268, 220, 368, 258, 242, 310, 272, 342, 310, 290, 300, 320, 319, 304, 402, 318, 406, 292, 354, 278, 210, 240, 330, 316, 406, 215, 258, 236. The frequency of the class 310 - 330 is :

A

4

B

5

C

6

D

7

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Construct a frequency polygon for the following data:

A grouped frequency distribution table with classes of equal sizes using 63 - 72 (72 included) as one of the class is constructed for the following data : 30, 32, 45, 54, 74, 78, 108, 112, 66, 76, 88, 40, 14, 20, 15, 35, 44, 66, 75, 84, 95, 96, 102, 110, 88, 74, 112, 14, 34, 44. The number of classes in the distribution will be :

In a histogram, each class rectangle is constructed with base as

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

The lower limit of class interval 20-25 is :

The upper limit of class interval 20-30 is:

The mid value of a class interval is 42 and the class size is 10. find the lower and upper limits.

Explain the meaning of the following terms: class interval.

MBD-STATISTICS-EXERCISE
  1. Let m be the mid-point and l be the upper class limit of a class in a ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  6. To draw a histogram to represent the following frequency ditribution :...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  11. Let barx be the mean of x1,x2,……,xn and bary the mean of y1,y2……,yn ba...

    Text Solution

    |

  12. If barx is the mean of x1,x2,x3, ………..xn , then for ane0, the mean of ...

    Text Solution

    |

  13. If barx1,barx2,barx3,….., barxn are the means of n groups with n1,n2,…...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |