Please Help!!! Advice Needed!!

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Unregistered50
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#1
Report 16 years ago
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hi, i am doing some coursework, and i would appreciate some advice:

i have 2 tables of results, with 10 values in each table.

which is more accurate, to add all 20 values together and divide by 20 to find a mean value that represents both tables, or to find 2 seperate mean values (1 for each table), then add these 2 mean values together and divide by 2, to find the mean value that represents both tables. which method is better?
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Ralfskini
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Report 16 years ago
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(Original post by Unregistered50)
hi, i am doing some coursework, and i would appreciate some advice:

i have 2 tables of results, with 10 values in each table.

which is more accurate, to add all 20 values together and divide by 20 to find a mean value that represents both tables, or to find 2 seperate mean values (1 for each table), then add these 2 mean values together and divide by 2, to find the mean value that represents both tables. which method is better?
You should only find a mean if both tables are measuring the same thing and all variables are the same, in which case you use the first. Dont use the second whatever.
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Unregistered50
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