SOLUTION: The following distribution of marks has mean 5.5
Mark 1 2 3 4 5 6 7
Frequency 2 4 6 9 x 9 4
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Question 1153914: The following distribution of marks has mean 5.5
Mark 1 2 3 4 5 6 7
Frequency 2 4 6 9 x 9 4
Found 2 solutions by greenestamps, ikleyn:
Answer by greenestamps(13203) (Show Source): You can put this solution on YOUR website!
Obviously the data is bad....
Looking at the data for marks 1-4 and 6-7, the mean is
= 4.29 approximately.
You can't add marks of 5 to a mean of 4.29 and end up with a mean of 5.5.
Answer by ikleyn(52824) (Show Source): You can put this solution on YOUR website!
.
When a post comes to the forum with no question (as the given post does),
such post DOES NOT DESERVE any consideration, at all.
What it really deserves, is a PENALTY.
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