2Mean is found by evening out the numbers 2, 5, 2, 1, 5
3Mean is found by evening out the numbers 2, 5, 2, 1, 5
4Mean is found by evening out the numbers 2, 5, 2, 1, 5mean = 3
5Mean is the average of a set of data Mean is the average of a set of data. To calculate the mean, find the sum of the data and then divide by the number of data.
6Mean12, 15, 11, 11, 7, 12First, find the sum of the data.= 68Then divide by the number of data.68 / 6 = 12The mean is 12
7You can remember that “mean” means to average because the “mean teacher averages your grade.”
8Reorder from least to greatest What is the median?The middle number in the set of data when written “in order” (first step we do)Given: 14, 28, 0, 1, 1Reorder from least to greatest0, 1, 1, 14, 28The middle number is 1
9Divide by 2. What is your median? What if you have an even set of numbers?Given: 10, 0, 20, 30Reorder from least to greatest0, 10, 20, 30Add the two middle numbers together.Divide by 2. What is your median?15
11What is the median of these numbers? 16, 10, 77, 10, 1610
12Mode Mode: the number that appears the most often. A family has children aged 3, 4, 5, 3, 1.3 appears twice, the other numbers only once.3 is the mode.
13What is the mode?1, 1, 2, 2, 3, 3, 4, 4There is NO mode
14Can there be more than one mode? 1, 2, 2, 2, 3, 3, 4, 4, 4Yes, there are two modes.What are they?2 and 4
15You can remember that mode means the number that occurs the most because “mode” and “most” sound alike!
16Range – the difference between the greatest and the least value in a set of numbers. 1, 1, 3, 7, 10, 13Range = 12
17Range = 29 First put the numbers in order from smallest to greatest. 40, 30, 43, 48, 26, 47, and 50To find the range you would take the largest number, 50, and subtract the smallest number, 26.55 – 26 = 29Range = 29
18Match Average Middle Most Frequent Difference Mode Range Median Mean Directions: Use the pen feature of Power Point to match each word in the left column with the correct term on the right.MatchAverageMiddleMost FrequentDifferenceModeRangeMedianMean
19The number that occurs most Mode MeanThe averageMedianThe number or average of the numbers in the middleThe difference between the greatest and smallest valueRangeThe number that occurs mostMode
20Did You Know…That you probably use statistics such as mean, median, mode and range almost every day without even realizing it?!?
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