Wednesday, April 29, 2015

Central Tendency

This post covers central tendency this is just a fancy way of saying mean, median, and mode.  These are different forms of finding frequencies in a list of data.  Mean is the average of the data.  This is calculated by adding all the data together and then dividing it by the number of data points you have.  Median is the middle number of all the data points.  if the list of data is even you just find the average of the two numbers in the middle.  Lastly, there is the mode.  This is calculated by simply finding which number occurs the most in a list of data points.




These central tendencies also include range.  Range is the difference between the highest and the lowest data points.  There are also out-liars in data some times.  Out-liars are data points that are widely different then the other data.  There is an example right below of what an out-lair is.  

                                            Image result for outliers math        
  Here is an example of Central Tendencies in action.  This method works best when the numerical data is in order from least to greatest.   


                                        Image result for central tendency examples

 (Here is a fun activity for your students to play that goes off of what I have explained about statistics using Central Tendencies.)    Central Tendencies Activity 

Blogroll:
Measures of Central Tendency
Teaching Math Measures of Central Tendencies
Central Tendencies
Mean and Median
Activity for Central Tendency
Tags:
Central Tendencies worksheets
Teaching Central Tendency 
Fruit Loops Activity
Exploring Central Tendency
Explaining Central Tendency
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2 comments:

  1. The Probability and Statistics FUN May 4, 2015 at 10:35 AM

    I really liked your whole blog, but this now stuck out to me. You explain every detail about central tendency and it was super clear. Sometimes when you read blogs it is confusing to understand what is trying to be said, but this was not one of those! All of your pictures really helped enhance everything. If I was a student in your class I would go to this blog for everything.

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  2. Ellieboo6May 6, 2015 at 9:09 PM

    Hi.
    So first off i really liked how you explained what central tendencies are and have pictures to help visually see what is going on. This definitely reaches different types of of learning styles. Also really cool how you put a different activity in your post that goes off your post. Great job:)

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