NCERT Solutions Class 6 Maths Chapter 6 — Data Handling & Presentation

Solution:

Step 1: Data refers to the unorganized facts, figures, and information collected from various sources.

Step 2: Before data can be analyzed or presented, it exists in its raw form.

Step 3: Therefore, raw facts and figures are the best description of data.

Solution:

Step 1: Go through the list of responses and count every time 'Red' appears.

Step 2: The list is: Red, Blue, Green, Red, Yellow, Blue, Red, Green, Blue, Red.

Step 3: Counting 'Red' gives: 1 (first), 2 (fourth), 3 (seventh), 4 (tenth).

Step 4: So, 4 students chose 'Red'.

Solution:

Step 1: Tally marks are grouped in fives for easy counting.

Step 2: A group of five is represented as |||| (four vertical lines with a diagonal line through them).

Step 3: To represent 8, we need one group of five and then three more individual tally marks.

Step 4: So, 8 is represented as |||| |||.

Solution:

Step 1: Total number of students who chose 'Cricket' = 25.

Step 2: Value represented by one cricket bat symbol = 5 students.

Step 3: Number of symbols needed = (Total students) / (Value per symbol).

Step 4: Number of symbols = 25 / 5 = 5.

Solution:

Step 1: The key states that 1 flower symbol (🌷) represents 10 flowers.

Step 2: For 'Roses', there are 4 flower symbols.

Step 3: Total number of roses = Number of symbols × Value per symbol.

Step 4: Total number of roses = 4 × 10 = 40.