Question

Five coins were simultaneously tossed 1000 times, and at each toss the number of heads was observed. The number of tosses during which 0, 1, 2, 3, 4 and 5 heads were obtained are shown in the table below: Find the mean number of heads per toss.
No. of heads per toss
0
1
2
3
4
5
No. of tosses (f):
38
144
342
287
164
25

Answer 1

ARITHMETIC MEAN OR MEAN OR AVERAGE :  

The arithmetic mean of a set of observations is obtained by dividing the sum of the values of all observations by the total number of observations .

Mean = Sum of all the observations / Total number of observations .

MEAN = Σfixi / Σfi

[‘Σ’ Sigma means ‘summation’ ]

FREQUENCY DISTRIBUTION TABLE IS IN THE ATTACHMENT  

From the table : Σfixi = 2470 , Σfi = 1000

MEAN = Σfixi / Σfi  

MEAN = 2470/1000 = 2.47

MEAN = 2.47

Hence, the mean number of heads per toss is 2.47 .

HOPE THIS ANSWER WILL HELP YOU….

Answer 2

_____Heyy Buddy ❤______

____Here's your Answer _______

Now,

Mean = A + fixi / fi

=> Mean = 2 + 470 / 1000

=> Mean = 2 + 0.47

=> Mean = 2.47
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