Data and data collection

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Qualitative
This is data such as the colour of cars
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Discrete quantative
This is numerical data that can only take certain values, such as the number of people on a bus
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Continuous quantative
This is numerical data that can take any value in a range of values, such as the weight of apples
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Primary data
This is data collected using surveys or experiments
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Secondary data
This is data collected from existing lists or tables
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Look at historical data
This would be used to predict whether it will rain on 4 July in Edinburgh, for example. You would look back at the records for all previous years
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Experiment
This would be used to test the probability of an event that cannot be predicted, such as how many blue balls are in a bag. By taking out 100 balls, you can get an approximate probability
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Equally likely outcomes
This is used when the probability of an event can be predicted. For example, taking a king from a pack of cards
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Surveys
These are used when there is no historical data and no way to predict probabilites. A survey, for example, would be used to find out what subject is the favorite amongst year 7 pupils
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Other cards in this set

Card 2

Front

This is numerical data that can only take certain values, such as the number of people on a bus

Back

Discrete quantative

Card 3

Front

This is numerical data that can take any value in a range of values, such as the weight of apples

Back

Preview of the back of card 3

Card 4

Front

This is data collected using surveys or experiments

Back

Preview of the back of card 4

Card 5

Front

This is data collected from existing lists or tables

Back

Preview of the back of card 5
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