In the verge of coronavirus pandemic, we are providing FREE access to our entire Online Curriculum to ensure Learning Doesn't STOP!

# Ex.14.2 Q6 Statistics Solution - NCERT Maths Class 9

Go back to  'Ex.14.2'

## Question

Three coins were tossed $$30$$ times simultaneously. Each time the number of Heads occurring was noted down as follows:

\begin{align}0\,\, 1\,\,\, 2\,\,\, 2\,\,\, 1\,\,\, 2\,\,\, 3\,\,\, 1\,\,\, 3 \,\,\,0\,\,\,\\ 1\,\,\, 3\,\,\, 1\,\,\, 1\,\,\, 2\,\,\, 2\,\,\, 0\,\,\, 1\,\,\, 2\,\,\, 1\,\,\\ 3\,\, 0\,\,\, 0\,\,\, 1\,\,\, 1\,\,\, 2\,\,\, 3\,\,\, 2\,\,\, 2\,\,\, 0\end{align}

Prepare a frequency distribution table for the data given above.

Video Solution
Statistics
Ex exercise-14-2 | Question 6

## Text Solution

What is known?

• Number of times three coins were tossed simultaneously.
• Number of ‘heads’ that occurred during each toss.

What is unknown?

Constructing the required frequency distribution table.

Reasoning:

We can count in each case and can be written in front of them , like this we can draw frequency distribution table.

Steps:

By observing the given data, we can prepare the frequency distribution table as follows:

 NUMBER OF HEADS TALLY MARKS FREQUENCY OF OCCURRENCE $$0$$ |||| | $$6$$ $$1$$ |||| |||| $$10$$ $$2$$ |||| |||| $$9$$ $$3$$ |||| $$5$$ TOTAL $$30$$

Learn from the best math teachers and top your exams

• Live one on one classroom and doubt clearing
• Practice worksheets in and after class for conceptual clarity
• Personalized curriculum to keep up with school