Measures of Central Tendency- a value that represents the centre of a data set
Data set is a group of numbers 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 order
median of 2, 5, 6, 8, 9 is 6
Mode- the most frequently occurring number in a set of data
mode and most both have 4 letters
mode of 3, 5, 7, 7, 9 is 7
mode of 2, 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 central tendency, the sum of a set of values divided by the number of values in the set
mean of 6, 4, 8 is 6 6+4+8=18 18 divided by 3= 6
Range- the positive difference between the largest and smallest values in a data set
range of 1, 3, 4, 5, 5, 6, 6, 8, 8, 9 is 8 9-1=8
range of -7, -4, -2, -1 is (-1) - (-7)=6
Outlier- a value that is much larger or smaller than the other data value
the data set may have more than 1 outlier or 0 outliers
outlier of 1, 64, 65, 67, 67, 68, 100 is 1 and 100
Here is a video link:
http://www.youtube.com/watch?v=TD_utDA7P6A&feature=related
7 comments:
Casey, Great Post! I like that you had a lot of examples and you made it different colors so it stand out. You can improve your post by adding a link to a website about central tendency. Here is a link you can use http://regentsprep.org/REgents/math/ALGEBRA/AD2/measure.htm
Good Job Casey!
Casey you had a great post, you told what a mode, median, mean, Range, and outlier was. I like that you made each paragraph different colours the video was ok to. but you can add a link here is a link you can use:http://alex.state.al.us/lesson_view.php?id=23961
Great job!
Hi Casey. i really like your scribe post. i like how well organized it is and like how you used different color but you should do the font more bigger. I like you website or you-tube page that you put on you scribe post.
GOOD JOB CASEY :)
Hi Casey, good job on your scribe post! I like how you put each definition in a different color, I also liked how you put the word in one color different from the definition, it was very organized, it was colorful, but the font was too small. I noticed you didn't have a link so here's one I found you can use: http://www.gamequarium.com/data.html
hey casey! i really like your post. it is really colorful and it stands out! i see you dont have a link, well here is one to help! http://ca.ixl.com/math/grade-7/calculate-mean-median-mode-and-range. great job! :)
Hi Casey! Your post is very nice! The video is very good! I like how you changed the colors! it looks great!
Hi Casey. Great scribe post! I like how you added colors, but you should make your font a bit larger. The definitions are easy to understand and read! Good job! I like the song about " mean, median and mode" on your video. Here is a link/game you can add : http://www.kidsmathgamesonline.com/numbers/meanmedianmode.html
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