Test #3 score distribution and discussion

Here is some information regarding the third test. I've tabulated scores from the test and also have tabulated scores and projected grades through the first 3/4^th of the semester.

Test 3 distribution:

mean = 27.0263 out of 40 (67.57%)
median = 27.5 out of 40 (68.75%)

standard deviation = 5.48 (13.69%)

The distribution of "approximate grades" is as follows:

out of 45 points:

A: 33 + (14 observations)
B: 27 – 32.5 (29 observations)
C: 21.5 – 26.5 (22 observations)
D: 17* - 21 (8 observations)
F: 16.5 and lower 2 observations)

any score under 20 (50%) should indicate that you really didn’t perform well at all.

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3/4^th term grades:

From your scores on the three tests and homework assignments, you can compute a weighted average. If you scored perfect on all assignments you could have up to 71 points. So calculate your weighted average and divide by 71 to get your current percentage score. I have calculated your weighted average of points and wrote that on your test paper which was returned to you. You can divide your points by 71 to put into the percentages. Currently the distribution is as follows:

*The following are in PERCENTAGES—The figure on your paper is POINTS, not PCT. Do the MATH*

mean = 72.16%
median = 72.87%
stdev = 10.39%

So the following distribution of "approximate grades" is used to determine the midterm grade:

A: 83 % and higher (10 observations)
B: 72 - 82.9% (29 observations)
C: 61 - 71.9% (29 observations)
D: 50 – 60.9% (10 observations)
F: below 50% (2 observations)