Friday, 16 October 2009

Mean, Median and Mode. Elementary Maths (1ºESO & 2º ESO) Video & Game

Hello everyone! Watch this video on mean, median and mode, and learn the song, so you can impress me in our next class! Besides, if you learn the words, you'll remember how to differentiate between the three terms. When you've done that, test yourself with the simple game that follows.



The lyrics for the song:

Mean, median and mode
Mean, median and mode
How do you find the mean?
Add up the numbers in the data set
Divide the total by the number of items
The answer is the mean or average

Mean, median and mode
But how do you find the median?
Arrange the numbers in order
From the lowest to the highest values
The middle number is the median
For an odd number of items
The average of two middle numbers
Is the median for an even number of items

Mean, median and mode
Mean, median and mode
How do you find the mode?
Just find the number that repeats most often
And that number is the mode
If you find no number that repeats most often
Then there is no mode
Mean, median and mode
Mean, median and mode
Mean, median and mode

I'll explain the examples shown in the video:

Mean:

Data: 1, 8, 6, 4, 6

Add up all the numbers in the set: 1+8+6+4+6, which gives the answer 25. There are 5 numbers in the set. You calculate the mean (also known as average) by dividing 25 by 5, which gives the answer 5.

Median:

Using the same data, you arrange the numbers in ascending order: 1, 4, 6, 6, 8. Since there are 5 numbers (which is an odd number), the one in the middle is 6 (1 and 4 to the left of it, and 6 and 8 to the right). So, 6 is the median.

If, however, there are 4 numbers (which is an even number) 1, 4, 6, 6, you'll have to add the 2 middle numbers, which, in this case, is 4+6. Then, you divide the answer by 2: 4+6=10. 10 / 2= 5. So, 5 is the median here.

Mode:

The mode is basically the number which repeats most often. In our example, the number that repeats most often is 6 (repeats twice). If there aren't any numbers which repeat (e.g. 1, 8, 6, 4), then we say that there isn't any mode.

Let's test if you've understood the concept by playing this game. Have fun learning! Oh, and don't forget to submit a comment so I know you've been here!


17 comments:

  1. Daila Guerra 2ºA18 October 2009 at 18:49

    <span style="color: #808080;">Hii Chiew! ^^   I do iit! :-P   It´s easyy! </span>

    ReplyDelete
  2. Fantastic, Daila! 8-) Make sure you learn the song because I want to hear you sing it! :)

    ReplyDelete
  3. Guillermo 2ª A ESO22 October 2009 at 19:00

    <span style="color: #808080;">Do we have to sing it!'<span style="color: #000000;"> =-O </span></span>
    well I did it=)

    ReplyDelete
  4. I've always been scared of math but this song is lovely.

    http://www.realtrack.com.au

    ReplyDelete
  5. I'm glad you liked it! :)

    ReplyDelete
  6. Kyrylo 2º ESO A27 October 2009 at 14:51

    I did it

    ReplyDelete
  7. <span style="color: #808080;">I did it chiew!!</span> :) but I don`t sing very well :-P

    ReplyDelete
  8. I did it too love this one thanks for sharing.. :)

    <a href="http://www.enta10ment.blogspot.com/ /">

    ReplyDelete
  9. :-D :-D :-D :-D :-D :-D :-D :-D :-D :-D :-$ :-$ :-$ :-$ :-$ :-$ :-$ :-$ :-$ :-$

    ReplyDelete
  10. Someone wishing to remain anonymous, no doubt! =-O

    ReplyDelete
  11. Guillermo 2ª A ESO7 July 2011 at 09:05

    <span style="color: #808080;">Do we have to sing it!'<span style="color: #000000;"> =-O </span></span>
    well I did it=)

    ReplyDelete
  12. I've always been scared of math but this song is lovely.

    http://www.realtrack.com.au

    ReplyDelete
  13. Iván 2º ESO A7 July 2011 at 09:05

    <span style="color: #808080;">I did it chiew!!</span> :) but I don`t sing very well :-P

    ReplyDelete
  14. FUN &amp; FACT7 July 2011 at 09:05

    I did it too love this one thanks for sharing.. :)

    <a href="http://www.enta10ment.blogspot.com/ /">

    ReplyDelete

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