Check sibling questions

Ex 3.1, 2 - Chapter 3 Class 7 Data Handling

Last updated at May 29, 2023 by

Ex 3.1, 2 - Organise the marks in a class assessment, in tabular form

Ex 3.1, 2 - Chapter 3 Class 7 Data Handling - Part 2
Ex 3.1, 2 - Chapter 3 Class 7 Data Handling - Part 3 Ex 3.1, 2 - Chapter 3 Class 7 Data Handling - Part 4 Ex 3.1, 2 - Chapter 3 Class 7 Data Handling - Part 5

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class

Book a free demo

Transcript

Ex 3.1, 2 Organise the following marks in a class assessment, in a tabular form. 4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7 Here, we write numbers in tabular form (i) Which number is the highest? (ii) Which number is the lowest? Height number = 9 Lowest number = 1 (iii) What is the range of the data? Range = Highest number βˆ’ Lowest number = 9 βˆ’ 1 = 8 (iv) Find the arithmetic mean Mean = (π‘†π‘’π‘š π‘œπ‘“ π‘œπ‘π‘ π‘’π‘Ÿπ‘£π‘Žπ‘‘π‘–π‘œπ‘›)/(π‘π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ π‘œπ‘π‘ π‘’π‘Ÿπ‘£π‘Žπ‘‘π‘–π‘œπ‘›) = (𝟏 + πŸ’ + πŸ‘ + 𝟏𝟐 + πŸπŸ“ + πŸπŸ’ + πŸπŸ’ + πŸ– + πŸ—)/𝟐𝟎 = (πŸ– + 𝟏𝟐 + πŸ’πŸ— + πŸπŸ’ + πŸπŸ•)/𝟐𝟎 = 𝟏𝟎𝟎/𝟐𝟎 = 𝟏𝟎/𝟐 = 5 ∴ Mean = 5

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.