Statistics - Part One: Data Collection

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  • Created by: Simone
  • Created on: 19-06-13 12:32
When planning an investigation what do you start with?
Research Question
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What should this be?
A general and broad question that could be broken down into sub-questions
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What is a hypothesis?
A hypothesis is a statement that you think is true but you haven't go evidence to support yet. A hypothesis must be testable.
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What is primary data?
Data that you have collected yourself
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Give two examples of primary data
a survery (in form of a questionnaire, an interview or observation) or an experiment
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What is primary data?
Raw Data
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What are some pros of primary data?
1. The data you gather is directly related to and tests you hypothesis 2. You have complete control over your method of collection
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What is a disadvantage of primary data?
Costs a lot of time and money - may not be very convenient
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What is secondary data?
Data someone else has collected
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Where can you get secondary data from?
newspapers, magazines, the internet, databases and historical records
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Where can you get secondary data from the government?
Through the Office for National Statistics (ONS)
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What are some pros of secondary data?
1. Easier to get hold of. 2.May be free of charge. 3.A lot of the work has already been done - making the investigation quicker.4. You can use bigger data sets than you could collect on your own
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What are some cons of secondary data?
1. It is often processed (not in the format you want).2. may not represent the thing you want to research exactly (e.g. might be out of date or wrong geographical region) 3. It is hard to know how accurate the data is. 4. Bias
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Other cards in this set

Card 2

Front

What should this be?

Back

A general and broad question that could be broken down into sub-questions

Card 3

Front

What is a hypothesis?

Back

Preview of the front of card 3

Card 4

Front

What is primary data?

Back

Preview of the front of card 4

Card 5

Front

Give two examples of primary data

Back

Preview of the front of card 5
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