Measures of Central Tendency
-A value that represents the center of a data set
-Can be the mean,median, or mode
Data Set- is a number that you must arrange in order from least to greatest
Median- the middle number in a set of data after the data have been arranged in ordereg.
median of 2,5,6,8,9 is 6
Mode- the frequently occurring number in a set of data
mode and most have 4 numbers
-mode of 3,5,7,7,9 is 7
-mode of, 2, 4, 6, 6, 8, 11 is 2 and 6
-mode of 1, 2, 3, 5 is no mode
-mode of 1, 1, 1, 2, 2, 2, 3, 3, 3 is no mode
-mode of 1, 1, 1, 2, 2, 2, 3, 3, 3, 4 is 1, 2 and 3
Mean- a measure of a central tendency, the sum of the set of value divided by the number of values in the set
mean of 6,4,8 is 6
4,6,8
4+6+8=18
Range-The positive between the largest and smallest values in a data set
Range of 4,5,5,6,9,1,3,5,8,6
1,3,4,5,5,6,6,8,8,9
Outlier-a value that is much larger or smaller then the other data value
the data set may have more then 1 outlier or 0 outliers
outliers are 1,67,67,67,65,100
Heres a video!
http://youtu.be/81zcjULlh58
Heres a link!
http://www.basic-mathematics.com/measures-of-central-tendency.html
4 comments:
good powerpoint very long but you should have put a picture
hi diana! i really liked your blog/post. it helped me remember about class and reviews! here is a link that may help, http://www.proprofs.com/quiz-school/story.php?title=test-mean-median-mode-range. good job :)
Hi Diana, great scribe post! I liked that you used different colors for the font. It made the font really stand out. Your post was really easy to read and understand. But I noticed that you didn't have the answers to some of your examples. For range, the answer is 8. And for outlier, the answer is 1 and 100. Other than that, you post was great! I know that you already have a link but here's on I found that I think you may want to add to your post.
http://ca.ixl.com/math/grade-7/calculate-mean-median-mode-and-range
Hi Diana. Great scribe post! It's well organized and easy to read and understand. On the first two definitions your font color is kind of faded, you should make it darker. (measures of central tendency and data set) The video and link helped! Good job! Here is another link that may also help : http://ca.ixl.com/math/grade-7/calculate-mean-median-mode-and-range
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