Articles in this weeks news tell me that smoking in the UK is now down to 12% of the population
I realise that the people creating that statistic did not ask all of the population if they smoked or not.
In the dim memories of my mind , I seem to recall something like, you only have to ask 2000 people and then multiply up to get a reasonable, workable figure.
Is this true? and if so is it based on someones 'laws of statistics?
If so, can you point me in the right direction?
I realise that the people creating that statistic did not ask all of the population if they smoked or not.
In the dim memories of my mind , I seem to recall something like, you only have to ask 2000 people and then multiply up to get a reasonable, workable figure.
Is this true? and if so is it based on someones 'laws of statistics?
If so, can you point me in the right direction?