Question 1077246: I recently did a homework and it was out of 50 and i recieved a 38% beacsue i had l9 right and 21 wrong so if i got a 38% and averaged it with 74.95 what is my new average
Answer by KMST(5328)   (Show Source):
You can put this solution on YOUR website! This sounds like a real life problem,
and those are more complicated.
You usually need more information,
and if you do not have enough information,
you have to make an educated guess.
My guess is that you should not fret about the grade on on piece of homework,
because it is a very small part of the final grade.
you probably should worry about what you did wrong and why,
because fixing your gaps and misunderstandings will help you when the tests come up.
I think you are not providing enough information.
If the 74.95 is the grade for the first homework assignment of a term,
the 38% is the grade for the second homework assignment,
and both homework assignments are given equal value,
the current average for homework assignments would be
 which should be rounded to 56.48.
If the 74.95 is the grade for the first 4 homework assignments of a term,
the 38% is the grade for homework assignment number 5,
and all homework assignments are given equal value,
the current average for homework assignments would be
 .
The 74.95 is probably the average of several homework assignments,
or maybe is the current total average for tests and homework assignments
(and maybe other stuff like projects, class participation, notebook review, etc).
In that case, I cannot tell you how much one assignment would affect your current average.
Grades are usually weighted averages,
meaning that not all assignments have the same value.
For example, the midterm and the final may be each worth 10% of the grade,
the chapter tests (all averaged together) may be worth 50% of the grade,
and the homework assignments (all averaged together) may be worth 30% of the grade.
To make it still more complicated, the current average includes only the work attempted, and that can make it misleading.
Let's say Mary always gets 100% on homework,
so until the first chapter test,
she only has grades for homework (which will be 30% of the final grade),
and has a 100% current average.
When she gets a 75% on the first chapter test,
that 75 gets multiplied times 0.50 (for the 50% weight of chapter tests),
the 100 average for homework gets multiplied for 0.3 (for the 30%),
those products are added, and the sum is divided by 0.8 (for 0.5+0.3=0.8) .
At that point, her current grade drops to
 .
The current grade you are given fluctuates too much to fret about it during the first part of the term.
If your average is lower than you want midway through the term, then you can worry,
and if it is really bad, then you get a tutor.
I did lots of grade calculations for my courses and my children's courses,
and I used strategy to get the grades needed in the most efficient manner.
I could give you good advice, but would need a lot more information.
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