Question

the mean of the marks scored by 40 students were found to be 35. later on it was discovered that the score of 43 was misread by 34. the correct mean is​

Answer 1

Answer:

the correct mean is 9 answer

Step-by-step explanation:

43 sub in 34 answer is 9

Answer 2

Answer:

We have 60=

40

sum

thus sum=60×40=2400

48 was misread as 84

So, corrected sum=sum−84+48

correct sum=2400−36=2364

correct mean=

40

2364

=59.1