1.0 Students compute and analyze statistical measurements for data sets:

1.1 Compute the range, mean, median, and mode of data sets. Mean Median Mode & Range The mean is the average score.

In order to calculate the mean of a set of scores, add up all of the scores and then divide by the number of scores. Mean The median is the score in the middle.

First, rank order the scores from smallest to largest. If you have an odd number of scores, then the middle score is the median. If you have an even number of scores, then add the two middle scores and divide by 2. Median The mode is the most frequently occurring score. Mode The "Range" for a data set is the difference between the largest value and

smallest value contained in the data set. Range Practice: Mean Median Mode Range Practice: Mean Median Mode Range Example: Add all scores

2+5+8+7+3=25 Divide total of scores

25/5=5 Example 8,4,3,9,7,2 Rank from smallest to largest 2,3,4,7,8,9 Median 4+7=11 11/2=5.5 Example: 5,1,7,6,9,8,2,4,6 Rank from smallest to largest. 1,2,4,5,6,6,7,8,9, Mode=6 Example: 5,1,6,7,2,9 Rank the numbers from smallest to largest. 1,2,5,6,7,9 subtract 9-1=8 Range=8 Find the mean, median, mode, and range.

12,18,7,4,12,19,3 3,4,7,12,12,18,19 Mean= Median= Mode= Range= Mean=5 10.71 12 12 16 12,5,7,18,5,10,3 3,5,5,7,10,12,18 Mean= Median= Mode= Range= 8.57 7 5 15

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# Mean, Median, Mode, Range

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