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.
6 comments:
I can do it but i need more practice.
i can kinda do the big scary formula :) - jacqueline
just getting the hang of it after leaving school 12yrs ago, Amy
Brilliant was you get into it. its like a wee bulb going on. Lorraine.
we love it
Its okayyy
need 2 do more practicee
maryam
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