If I got 117 out of 150, and the median is 124 and the mean is 122.1 and the standard deviation is 13. What is the diff between the median and mean? What is my letter grade probably be?
2007-11-07 07:47:07 · 4 answers · asked by naingzaw 2 in Science & Mathematics ➔ Mathematics
The important issue is your grade. The standard deviation is 13. Now the average score was 122.1. That is the total of all test takers scores divided by the number of test takers.
That is your Mean.
The Median number is the one that half the scores are above and half below.
The Standard deviation is where scores fall. Using a bell curve, half of the people are, combined, in that area. One standard deviation above is, for the Mean, 135.1 and below, 109.1. Since you are in the middle of the standard deviation you should get a C or at worst a C-.
2007-11-07 08:00:14 · answer #1 · answered by Songbyrd JPA ✡ 7 · 0⤊ 0⤋
The median is the middle of the data, or half way between the beginning and end of your range, from smallest to largest. Mean is the average, or the sum divided by the total number of terms. If the teacher is grading on a curve, your grade will be probably like a B... I think. But if they grading on a normal scale you gonna get like a 78% C+
2007-11-07 15:54:27 · answer #2 · answered by Anonymous · 0⤊ 0⤋
the median is all of the numbers in order then the middle number is the median but if there is 2 middle numbers you have to find the middle of them two numbers. the mean is all of the numbers added together divided by the total amount of numbers. hope this helps
2007-11-07 16:07:46 · answer #3 · answered by ♥♥♥Jemma Alice♥♥♥ 3 · 0⤊ 0⤋
median = put all numbers in order,(smallest to biggest) and the middle (or middle 2 numbers/2)
mean = (all numbers added togethor) / (total numbers)
difference = subtraction
124-122.1 = 1.9
2007-11-07 15:51:49 · answer #4 · answered by mkjk5761 3 · 0⤊ 0⤋