The mean of the marks scored by 40 student was found to be 35 later on it discovered that score of 43 was miread as 34 the correct mean is a)35.2 b)39.4 c) 39.8 d)39.2
Answers
Answered by
29
Answer:
35.25
Step-by-step explanation:
answer of this question is given as follows in the attachment
Attachments:
Answered by
34
Given : The mean of the marks scored by 40 students was found to be 35. Later on it was discovered that a score of 43 was misread as 34.
To Find: the correct mean
Solution:
The mean of the marks scored by 40 students was found to be 35
=> Total marks = 40 * 35
=> Total marks = 1400
a score of 43 was misread as 34.
Hence correct total = 1400 - 34 + 43
= 1409
Correct mean = 1409/40
= 35.225
Hence correct mean = 35.225
≈ 35.2
Learn More:
The mean and median of the data x+a, x+b, x+c are equal and a less ...
brainly.in/question/2870143
Find the mean and median of 10 47 3 9 17 4 27 48 12 15 - Brainly.in
brainly.in/question/8882216
Similar questions