Carlos' final score will be calculated as follows:Originally Posted by Panaboy
(83 + 74 + 81 + 85 + x + x + x)/7
so you must solve for x, the equation:
(83 + 74 + 81 + 85 + 3x)/7 = 75
I see your point, but you do need to divide by 7. Look at this easy example. Let's say you have two tests and you made an 80 on one and a 90 on the other. Let's say the second test, the one you made a 90 on, though is worth two test grades. Here's how you would calculate your average.Originally Posted by DenMac21
, where n is the number of 100 point tests. Now according to your logic I should divide by two, since there were two tests. That would give Oops! That can't be possible. Now let's say you divide it by three. .
In the OP's question you should treat the weighted test as three separate ones compared to the max point value of the others.
Wikipedia link on weighted mean
Following this:
Doing the math...
Am I right?
As a side note, does anyone know if LaTeX math has the "curly x symbol with a stroke over it" which should be infront of this answer?