CBSE Class 6 Mathematics Data Handling Assignment Set 03

VI - Mathematics Assignment No - 01 - Data Handling

Question 1. Following are the heights of 22 boys of a class, measured in cm.
128, 150, 142, 154, 140, 152, 128, 139, 148, 132, 136, 128, 143, 146, 154, 152, 140, 148, 150, 150, 136, 132.
Construct a table of these heights using tally heights.
Answer:
Arranging the given heights in ascending order and counting their frequencies using tally marks, we get the following frequency distribution table:

In simple words: A tally table helps us count how many times each height occurs by drawing vertical lines and grouping every fifth count with a cross slash.

Exam Tip: Always verify that the sum of the frequency column matches the total number of data points given in the question (22 boys).

Question 2. A survey of 20 families of a locality was done and noted the number of children in each family as follows:
2, 3, 2, 1, 1, 2, 3, 2, 2, 1, 2, 2, 3, 1, 2, 1, 1, 3, 2, 2.
Prepare a table of these children using tally bars.
Answer:
Counting the frequency of each number of children per family, we construct the table:

In simple words: We list each distinct number of children and tally their frequency across the 20 surveyed families.

Exam Tip: Group every block of five tally marks with a slant line to avoid counting errors.

Question 3. The marks obtained in a class-test out of 10 are as follows. Prepare a table of these marks using tally bars.
5, 4, 5, 4, 5, 7, 7, 6, 6, 5, 8, 7, 6, 7, 5, 7, 4, 7, 6, 5, 6, 5, 6, 4, 6, 6, 5, 6, 4, 6, 8, 7.
Answer:
Counting the frequency of each score from 4 to 8, we prepare the distribution table:

In simple words: Organize the marks in increasing order and tally the occurrences for each mark.

Exam Tip: Double-check that all 32 given data values are accounted for in the table frequencies.

Question 4. Rakesh is playing with a dice. He threw the dice 40 times and noted the outcomes as follows. Prepare a table using tally bars.
1, 2, 1, 5, 3, 5, 5, 3, 2, 2, 1, 6, 6, 6, 4, 6, 3, 5, 2, 3, 3, 5, 4, 1, 5, 5, 2, 4, 5, 5, 2, 4, 1, 6, 6, 1, 5, 6, 1, 5.
Answer:
Counting the frequency of each face outcome from 1 to 6 on a standard die, we get:

In simple words: Count how many times each number from 1 to 6 appeared in the 40 dice rolls.

Exam Tip: Ensure the total sum of frequencies equals 40.

Question 5. Prepare a table using tally bars of the number of animals at farm houses.
10, 11, 15, 14, 10, 15, 11, 11, 12, 13, 11, 11, 15, 12, 15, 15, 10, 10, 14, 13, 10, 10, 13, 14, 12, 15, 13, 11, 14, 12, 12, 14, 13, 10.
Answer:
Counting the frequency of each animal count across the farm houses, we get:

In simple words: Tally the frequency of each unique animal count from 10 to 15.

Exam Tip: Cross-verify your tally marks against the raw data list to ensure no numbers were missed.