1.

The mean of the marks scored by 50 students was found to be 39 later on, it was observed that a score was 43 was misread as 23 find the correct mean.A. 38.6B. 39.4C. 39.8D. 39.2

Answer» Correct Answer - b
calculated sum =` ( 39 xx 50) = 1950`
correct sum = ( 1950 +43-23) =1970
Correct mean = `1970/50 = 39.4`


Discussion

No Comment Found

Related InterviewSolutions