In this chapter, we provide RS Aggarwal Solutions for Class 7 Chapter 21 Collection and Organisation of Data Ex 21C for English medium students, Which will very helpful for every student in their exams. Students can download the latest RS Aggarwal Solutions for Class 7 Chapter 21 Collection and Organisation of Data Ex 21C Maths pdf, free RS Aggarwal Solutions Class 7 Chapter 21 Collection and Organisation of Data Ex 21C Maths book pdf download. Now you will get step by step solution to each question.

Textbook | NCERT |

Class | Class 7 |

Subject | Maths |

Chapter | Chapter 21 |

Chapter Name | Collection and Organisation of Data |

Exercise | 21C |

**RS Aggarwal Solutions for Class 7 Chapter 21 Collection and Organisation of Data Ex 21C Download PDF**

**Question 1.****Solution:**

(i) Arranging in ascending order :

4, 6, 7, 8, 8, 8, 8, 10, 11, 15

We see that 8 occurs maximum times

Mode = 8

(ii) Arranging in ascending order :

18, 21, 23, 27, 27, 27, 27, 27, 36, 39, 40

We see that 27 occurs maximum times

Mode = 27

**Question 2.****Solution:**

Arranging in ascending order :

28, 31, 32, 32, 32, 32, 34, 36, 38, 40, 41.

We see that 32 occurs maximum times

Mode = 32 years

**Question 3.****Solution:**

We prepare the table as given below:

Here, number of terms = 45, which is odd

Median = n+12 th term = 45+12 = 462 th term

= 23th term = 450

Now, mode = 3(median) – 2(mean)

= 3 x 450 – 2 x 470

= 1350 – 940

= 410

**Question 4.****Solution:**

We prepare the table as given below:

Here, number of terms (N) = 41, which is odd

Median = n+12 th term = 41+12 th term

= 422 = 21 th term = 22 {value of 18 to 29 = 22}

Mode = 3 (median) – 2 (mean)

= 3 x 22 – 2 x 21.92 = 66 – 43.84 = 22.16

**Question 5.****Solution:**

We prepare the table as given below:

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**All Subject NCERT Solutions For Class 7**

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