A probability problem by Hubert Hernandez Jr.

Probability Level 2

A student wants to find out the mean of his grades in 9 Mathematics subjects he has taken in Engineering. Can you help him? Answer up to 2 decimal places only.

Note: Take the grades listed as "4.00/3.00" to be 3.00.


The answer is 2.48.

Hubert Hernandez Jr. by Hubert Hernandez Jr. , 28, Philippines

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1 solution

Before you can get the average, first get the summation of the units times the grades(Σwx) then, also the summation of the units.(Σw). Then you can now divide the summation of units and grades to the summation of the units.

2 Helpful 0 Interesting 0 Brilliant 0 Confused

In the last two rows, what does the entry 4.00/3.00 mean?

Jon Haussmann - 6 years ago

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Sir, still, it's a grade. Equivalent to 3.00, In our school, if you got a grade of 4.00, you will have two chances depending on the removal exam, either you get 4.00/3.00 - passed or 4.00/5.00 - failed. I'm sorry to confused you Sir.

Hubert Hernandez Jr. - 6 years ago

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It's better if you state the meaning of 4.00/3.00 on the question. First time, I assumed the 4.00/3.00 is 4.00 divided by 3.00, so my answer is 2.16.

Mas Mus - 5 years, 9 months ago

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@Mas Mus – I'm really sorry sir for that. I'd changed it already, thank you sir!

Hubert Hernandez Jr. - 5 years, 9 months ago

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