# CBSE Class 10-Mathematics: Chapter – 14 Statistics Part 17 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question 15**:

Draw a less than give for the following frequency distribution:

Marks | |||||

No. of students |

**Answer**:

We have

Marks | Frequency | C. F |

Upper class limits | |||||

Cumulative Frequency | |||||

Plot the points |

Joint these points by a free hand curve; we get the required give which is as follows:

**Question 16**:

The A. M of the following frequency distribution is . Find the value of P.

Classes | |||||

Frequency |

**Answer**:

We have

Class Interval | Mid-value | Frequency | |

Since Mean

Thus,