Statistics Post 6

Stem and Leaf and Middle Measures. 
Today we're going to get into the basics of finding the middle of any data set. 
For this lesson we're going to look at counted data (discrete). 

Here is a copy of the power point of notes. 

The key learning [WALT] is to know the three measures of the middle.  And to also know what a "Stem and Leaf" graph looks like. 

 

 

Here is the idea of stem and leaf...

you can see the stem up the middle (getting bigger and bigger) and the leaves coming off the sides (extension work is the idea of both sides coming off the middle numbers). 












This is what they look like in maths...


The practice work is in the text book on pages 407 to 409 Exercise 28.7.


here is an online video for these stem and leaf plot (you need head phones for this)...

http://www.mathplayground.com/howto_stemleaf.html

Here is a link to an online game/tester for this content...
https://www.mangahigh.com/en-gb/maths_games/data/representing_data/stem_and_leaf_diagrams

Here is another link to the same type of materials...
http://www.mathsisfun.com/data/stem-leaf-plots.html

Here is one more online tester too...
http://www.ixl.com/math/grade-5/stem-and-leaf-plots