A teacher calculated the mean of 27 students mark to be 62. A student who later completed the assessment got a mark of 53. What
is the new mean of the class, to two decimal places?
1 answer:
Answer:
first of all the average score of students is 62.
and there are 27 students
so full marks scored by students are 27×62= 1674
and 1 new students added to that so his score would be 1674+ 53(his marks)= 1727
so now the mean of students are beause there are one more students so 27+1 = 28 then 28÷1727= 61.6 is the mean now
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