The mean of the marks scored by 50 stude...

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.

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The correct Answer is:

39.4

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RS AGGARWAL-MEAN , MEDIAN AND MODE OF UNGROUPED DATA -Exercise 18A

if the mean of five observations x, x+2,x+4,x+6,x+8 is 13 , find the v...
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The mean weight of 6 boys in a group is 48 kg. the individual weight o...
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The mean of the marks scored by 50 students was found to be 39 later o...
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The mean of 24 numbers is 35. if 3 is added to each number, what will ...
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The mean of 20 numbers is 43. if 6 is subtracted from each of the numb...
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The mean of 15 numbers is 27. if each number is multiplied by 4, what ...
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The mean of 12 numbers is 40. if each number is divided by 8, what wil...
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The mean of 20 numbers is 18. if 3 is added to each of the first ten n...
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The mean of six numbers is 23. If one of the numbers is excluded , th...
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The average height of 30 boys was calculated to be 150 cm. it was dete...
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The mean weight of a class of 35 student is 45 kg. if the weight of th...
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In a class there are 50 students. Their average weight is 45 kg. Wh...
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The average weight of a class of 39 students is 40 kg. when a new stud...
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The average weight of 15 oarsmen in a boat is increased by 1.6 kg when...
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The mean of 8 numbers is 35. if a number is excluded then the mean is ...
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The mean of 150 items was found to be 60. Later on, it was discoverved...
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The average of 11 results is 60. If the average of first six result...
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The mean 11 numbers is 42. if the mean of the frist 6 numbers is 37 an...
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The mean weight of 25 students of a class is 52 kg. if the mean weight...
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The mean score of 25 observations is 80 and the mean score of another ...
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