817 Math Blog

Mean

arange in ascending order
The sum of all data
__________________
devided by # of data
the mean is less accurate

eg.
*3,8,8,7,2,10,9
2,3,7,8,8,9,10

47
___ =6.7
7
6.7 is the Mean of this set of data









Median
arange in ascending order
The middle number of a set of data
if there are 2 medians add them up and find the mean
it helps you find out if there is an outlier
eg.
*2,7,9,4,102,5
2,2,4,5,7,9,102

5+2=12
12/2=6
6 is the Median of this set of data









Mode
arange in ascending order
the most frequently occoring number in a set of data
you can have more then one mode
you may also have no mode
you have no mode if the data only consists of one number
eg.
*3,8,8,7,7,7,2,10,9
2,3,7,7,7,8,8,9,10
7 is the most frequently occoring number in this set of data.










Range
arange in ascending order
subtract the smallest number from the largest number
it will tell you if you have an outlier in your set of data
eg.
3,8,8,7,9,105
3,7,8,8,9,105

105-3=102
102 is the range of this set of data.








here is a video i found on Mean,Median&Mode

• arrange the data in ascending order
• all of the numbers in set of data divided by how many numbers there are
• with an outlier the mean is a less accurate "average"
  

MEDIAN

• arrange data in numerical order
• the number that is in the middle of an odd set of data
• if the there is an even set of data, you must find the mean of the two middle numbers

*great to use if there is an outlier

MODE

• arrange the data in ascending order
• the number(s) that occur the most in a set of data
• you can have more than one mode
• you can have no mode
  
  

RANGE

• arrange the data in ascending order
• subtract the smallest data from the largest data
  
  

*large range = outlier

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Here is a video I found (on Youtube) about mean, median and mode.

Mean

mean:

• data must be in ascending order
• add all the data then divide by the how many there are

median

• data must be in numerical order
• find the middle number if there are two middle numbers you find the mean of them

mode

• data must be in ascending order
  
• the data that appears the most
• you can have more than one mode, you can also have no mode

range

• arrange the data in ascending order
• subtract the smalls data to the largest data
  

Define mean:

• Arrange in ascending order



• add all the number together



• divided them in how many are their

Define Mode:

• Arrange in ascending order (optional)



• Find the number that shows up the most
  
  
  

Define Median:

• Arrange in ascending order



• find the one in the middle



• if their are 2, Add them and divided by 2



• if theirs an outlier use the median to find the average

Define Range:

• Arrange in ascending order



• Find the smallest number and the biggest number



• Subtract the biggest number from the smallest number



• You can tell if its an outlier if the range high

Heres a video about MMM

Here are some videos about math. What are interesting to you? What do you notice?

Abbot and Costello (Video 1)


Ma and Pa Kettle (Video 2)



Our First Unit (Video 3)



Commercials and Math? (Video 4)


Please leave a comment behind. In the comment tell me what you think about the videos and what math you see in each one. Remember this is a math class. Don't just say that "the video is funny!"