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# Edexcel S2 Definitions

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1. Questions such as: Explain what you understand by:
a)sampling unit
b)sampling frame
c)sampling distribution
always seem to catch me out. They're usually worth a maximum of two marks but would be nice to be able to secure these.
Does anybody have a bank of definitions we could be asked?
2. (Original post by ABT123)
Questions such as: Explain what you understand by:
a)sampling unit
b)sampling frame
c)sampling distribution
always seem to catch me out. They're usually worth a maximum of two marks but would be nice to be able to secure these.
Does anybody have a bank of definitions we could be asked?
i think you can write a definition and give an example to get full marks!
3. I know it's late but here you are if you want to do some last minute memorising

What is a hypothesis test?: A mathematical procedure that examines a value of population parameter proposed by the null hypothesis with an alternative hypothesis.

What is a critical region?: A range of values that would lead to the rejection of the null hypothesis.

What is a census?: When every member of the population is investigated.

What is a population?: A Collection of individuals or items

What is a sample?: A selection of individuals from the population.

What is a sampling unit?: An individual member or element of the population or sampling frame

What is a sampling frame?: A list of all sampling units or all the population.

What is a statistic?: A random variable, functions of know data from a population.

Sampling distribution:Write down all the combinations of outcomes & their probabilities

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Updated: June 27, 2016
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