Question

For the following data, calculate arithmetic mean by assumed mean method.
Marks
10
20
30
40
50
60
Number of students
5
8
6
4
7.
8​

Answer 1

Answer:

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Answer 2

Step-By Step-Explanation: N=∑f  

i =80, h=10 A=35,d  i   =x  i  −A , u  i  =  hdi    Mean=A+h(  N∑u  i  fi  =35+10(  80 −56 )Mean=28