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# Consider the following distribution:

Marks obtained Number of students

Number of students63

More than or equal to 1058

More than or equal to 2055

More than or equal to 3051

More than or equal to 4048

More than or equal to 5042

The frequency of the class 30-40 is

a. 3

b. 4

c. 48

d. 51

**Solution:**

Marks obtained | Cumulative Frequency | Frequency |

0 - 10 | 63 | 63 - 58 = 5 |

10 - 20 | 58 | 58 - 55 = 3 |

20 - 30 | 55 | 55 - 51 = 4 |

30 - 40 | 51 | 51 - 48 = 3 |

40 - 50 | 48 | 48 - 42 = 6 |

50 - 60 | 42 | 42 |

Here the frequency of the class 30-40 is 3.

Therefore, the frequency of the class 30-40 is 3.

**✦ Try This: **Consider the following distribution:

Marks obtained | Number of students |

Number of students | 13 |

More than or equal to 10 | 18 |

More than or equal to 20 | 15 |

More than or equal to 30 | 11 |

More than or equal to 40 | 18 |

More than or equal to 50 | 12 |

The frequency of the class 30-40 is

**☛ Also Check: **NCERT Solutions for Class 10 Maths Chapter 14

**NCERT Exemplar Class 10 Maths Exercise 13.1**** Problem 11**

## Consider the following distribution: Marks obtained Number of students Number of students 63 More than or equal to 10 58 More than or equal to 20 55 More than or equal to 30 51 More than or equal to 40 48 More than or equal to 50 42 The frequency of the class 30-40 is a. 3, b. 4, c. 48, d. 51

**Summary:**

Frequency distribution is used to organize the collected data in table form. Considering the distribution, the frequency of the class 30-40 is 3

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