Three coins were tossed 30 times simultaneously. Each time the number of heads occurring was noted down as follows:
Prepare a frequency distribution table for the data given below.
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 
Solution:
By observing the given data, we can prepare an ungrouped frequency distribution table as follows.
NUMBER OF HEADS 
TALLY MARKS 
FREQUENCY OF OCCURRENCE 
0 1 2 3 
       
6 10 9 5 
TOTAL 

30 
☛ Check: NCERT Solutions for Class 9 Maths Chapter 14
Video Solution:
Three coins were tossed 30 times simultaneously. Each time the number of heads occurring was noted down as follows: Prepare a frequency distribution table for the data given above.
NCERT Solutions for Class 9 Maths Chapter 14 Exercise 14.2 Question 6
Summary:
It is given that three coins were tossed 30 times simultaneously. We have prepared an ungrouped frequency distribution table as given in the solution.
☛ Related Questions:
 The blood groups of 30 students of Class VIII are recorded as follows:A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O,A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O.Represent this data in the form of a frequency distribution table. Which is the most common, and which is the rarest, blood group among these students?
 The distance (in km) of 40 engineers from their residence to their place of work was found as follows: 5 3 10 20 25 11 13 7 12 31 19 10 12 17 18 11 32 17 16 2 7 9 7 8 3 5 12 15 18 3 12 14 2 9 6 15 15 7 6 Construct a grouped frequency distribution table with class size 5 for the data given above taking the first interval as 05 (5 not included). What main features do you observe from this tabular representation?
 The relative humidity (in %) of a certain city for a month of 30 days was as follows: 98.1 98.6 99.2 90.3 86.5 95.3 92.9 96.3 94.2 95.1 89.2 92.3 97.1 93.5 92.7 95.1 97.2 93.3 95.2 97.3 96.2 92.1 84.9 90.2 95.7 98.3 97.3 96.1 92.1 89 (i) Construct a grouped frequency distribution table with classes 84  86, 86  88, etc. (ii) Which month or season do you think this data is about? (iii) What is the range of this data?