Jason

JASON'S EXTENSION MATHS P AG E

GRAPHIN G
​ Graphing is an easy way to:

Organise information clearly,

Give answers to questions,

Tell people what to do,

And help people with modern day life.

Graphing is one of the most effective ways to collect and present data.

Steps to making a effective graph:
 * 1) Decide what information you want to show,
 * 2) Collect the data using a tally chart, stem and leaf graph ,or dot plots.
 * 3) Choose the right graph for YOUR information.
 * 4) Give the graph a title
 * 5) Give the graph lables on X and Y axis
 * 6) Put the information into the graph
 * 7) Reflect on your data, what does it show?
 * 8) Write a conclusion on what the data shows.

 __Cluster__ is a group of data in one area. A cluster would usually be used for plots __ ​ **O** __  __Trend__ is a group of data that are the same. These are mostly found in bar graphs. __Multiviriate data__ is data that has more than one variable. __Variables__ are data that has same topic but is a different surveying item. __Sample__ is a piece of data that is used to practice.  __ Surveying __ is when you are recording your data.  __P____atterns__ in data is where you can find groups of data that are in a pattern. __Relationship__ in data is when there is a some "connection" between to pieces of data. __Tally chart__ keeps a tally of how many things you are doing statistics on. __Frequency table__ shows the frequency of the data. P__ictograph__ is a graph used in pictures instead of bars. __Bar graph__ is a graph is where the data is shown in bars. There are four types of bar graphs, column graph, double bar graph, vertical bar graph and hystogram. __Histogram__ is the only bar graph thats is joined at every bit of data. __Strip graph__ is a graph that is a strip that is used for dividing data. __Pie graph__ is a circle where it is seperated into data for each specific thing. Youwould use a P__ie graph__ when doing data on eye colour. __Dot plot__ is a graph that uses dots for a specific thing eg. progress in class. __Dot plots__ usually have clusters. __Stem and leaf__ graphshave a stem and numbers come off the stem. __Scatterplot__ is data that is placed on a graph using co-ordinates. __Box and whisker__ plot is used to find out the upper and lower quartiles. __Line graph__ would be used in data about height and weight. __The mean__ is all the numbers added up and then divided by the amount of numbers in the series. __The median__ is the middle number, when all the numbers are put in numerical order. __The mode__ is the value that is surveyed the most. __The range__ is when the numbers are put in numerical order and the difference between the lowest and highest numbers