The big scary formula is not so scary any more ... If you were at the class. If you were absent it is up to you to find out what you missed. There are plenty of people in the class who have a good understanding of standard deviation.
Wednesday, September 17, 2008
The Big Scary Formula
The big scary formula is not so scary any more ... If you were at the class. If you were absent it is up to you to find out what you missed. There are plenty of people in the class who have a good understanding of standard deviation.
Sunday, September 14, 2008
15 September 2008 Social Work Statistics
Social Work Scotland uses graphs to present information in a way that makes it easier to compare. Here is a link to a graph which can be used to compare different local authorities.
September 15th Standard Deviation
The Standard Deviation is one of many tools used to measure the 'spread' of data. It looks like a scary formula but once you get the hang of it it is not as scary as it looks.
If you go on to study any social science you will meet this formula. In this section you will only work out the formula for small amounts of data and this will be enough to show you how to use the formula.
With large amounts of data you will use a computer program like Excel. (not needed for this course)
Mymaths has quite a nice introduction to the formula. It assumes you know how to calculate the mean (average). If you have forgotten how to calculate the mean you can revise it here.
The login is clydebank and the password is t****t. (Memory jog only)
The LTS Int 2 website has a bit more on standard deviation. Work through the website and do the examples. These have been printed out for you. Dont 'reveal' until you have done the question for yourself.
If you go on to study any social science you will meet this formula. In this section you will only work out the formula for small amounts of data and this will be enough to show you how to use the formula.
With large amounts of data you will use a computer program like Excel. (not needed for this course)
Mymaths has quite a nice introduction to the formula. It assumes you know how to calculate the mean (average). If you have forgotten how to calculate the mean you can revise it here.
The login is clydebank and the password is t****t. (Memory jog only)
The LTS Int 2 website has a bit more on standard deviation. Work through the website and do the examples. These have been printed out for you. Dont 'reveal' until you have done the question for yourself.
Percentages in Graphs
For a link to powerpoint slides which show examples of percentages in graphs click here. If the links dont work in college they may work if you have a computer at home.
