Q3 of 40 Page 200

Three coins were tossed 30 times simultaneously. Each time the number of heads occurring was noted down as follows;

1 2 3 2 3 1 1 1 0 3 2


1 2 2 1 1 2 3 2 0 3 0


1 2 3 2 2 3 1 1


Prepare a frequency distribution table for the data given above.


Given the number of heads on tossing three coins can be represented in the form of frequency distribution table.

Just count the occurrence of number of heads in the data and formulate a table.


Count of occurrence of head by 3 coins:


0 (head occurred 0 times) = 3


1 (head occurred 1 times) = 10


2 (head occurred 2 times) = 10


3 (head occurred 3 times) = 7



It can also be analyzed and represented graphically:



More from this chapter

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1

Write the mark wise frequencies in the following frequency distribution table.

 2

The blood groups of 36 students of IX class are recorded as follows.

A O A O A B O A B A B O


B O B O O A B O B AB O A


O O O A AB O A B O A O B


Represent the data in the form of a frequency distribution table. Which is the most common and which is the rarest blood group among these students?


 4

A TV channel organized a SMS(Short Message Service) poll on prohibition on smoking, giving options like A – complete prohibition, B – prohibition in public places only, C – not necessary. SMS results in one hour were A B A B C B

A B B A C C B B A B


B A B C B A B C B A


B B A B B C B A B A


B C B B A B C B B A


B B A B B A B C B A


B B A B C A B B A


Represent the above data as grouped frequency distribution table. How many appropriate answers were received? What was the majority of peoples’ opinion?


 5

Represent the data in the adjacent bar graph as frequency distribution table.