Ogt Math Study Guide Worksheet With Answers - Maple Heights City Schools Page 17
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3199 total (Maria has 1 red marble)
99
10
When looking at a multitude of #’s, such as test scores, we can find
the average score: mean, Most frequent scores: mode and middle
score: median.
Student sample
scores→
75% 75% 80%
85% 90% 92%
mean = add all scores = 75+ 75+80 + 85 + 90 + 92 = 497 = 82.8%
score
# of scores
6 scores
6
mode = 75 % was in the sample scores twice, the most frequent
score.
median = (middle score) you cut the # of scores equally in half from
least score to greatest. There are 6 scores. The middle score is between
80% and 85%.
75% 75% 80%
│
85% 90% 92%
To find the middle number you find the mean of these two numbers.
80 + 85 = 82.5
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