A group of 210 students appeared in some test. the mean of of students is found to be 60. the mean of the remaining students is found to be 78. the mean of the whole group will be:
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hi thank you for asking the question. This question was asked in many general knowledge papers from students
to find mean of some values you need to add all the values given and then divide it by total no. of values for example you have set of no. 1,2,3,4,5 so here mean of all values can be found by 1+2+3+4+5=15 and number of values are 5 so we divide 15 by 5 and mean will be 3
by following this rule the answer will be 72
hope this answer helps you
to find mean of some values you need to add all the values given and then divide it by total no. of values for example you have set of no. 1,2,3,4,5 so here mean of all values can be found by 1+2+3+4+5=15 and number of values are 5 so we divide 15 by 5 and mean will be 3
by following this rule the answer will be 72
hope this answer helps you
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