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Post a LessonAnswered on 03/01/2022 Learn CBSE/Class 10/Mathematics/UNIT VII: Statistics and probability/Statistics
Swati R.
NET JRF qualified and preparing for PhD..
First 10 Natural numbers are:- 1,2,3,4,5,6,7,8,9,10
Mean = Sum of all numbers/ total number of observations
= 1+2+3+4+5+6+7+8+9+10 / 10
= 55/ 10
= 5.5
Therefore, 5.5 is the mean of first 10 natural numbers
read lessAnswered on 03/01/2022 Learn CBSE/Class 10/Mathematics/UNIT VII: Statistics and probability/Statistics
Swati R.
NET JRF qualified and preparing for PhD..
in this question mean is already given and we know that:-
mean = sum of total numbers / total number of observations
15 = 2+6+7+a / 4
15*4 = 15+a
60 = 15+a
60-15 = a
a= 45
now we have found the value of a=45, we will put this value in second series:-
mean = sum of all numbers / total number of observations
50 = 6+18+1+45(value of a) + b / 5
50*5 = 70 + b
250 = 70 + b
b = 250 - 70
b = 180
read lessAnswered on 19 Apr Learn CBSE/Class 10/Mathematics/UNIT VII: Statistics and probability/Statistics
Sadika
The mean of the first n natural numbers can be calculated using the formula for the arithmetic mean:
Answered on 19 Apr Learn CBSE/Class 10/Mathematics/UNIT VII: Statistics and probability/Statistics
Sadika
To show that the mode of the combined series obtained by combining the two series S1 and S2 is different from that of S1 and S2 taken separately, we first need to find the mode of each series individually and then compare it with the mode of the combined series.
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