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Card 6

Front

Data that is not collected by or for the person who is going to use it

Back

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Card 7

Front

The collection of ALL the items about which we want to know some characteristics.

Back

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Card 8

Front

To collect information from every member of the population

Back

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Card 9

Front

A simple random sample gives each member of the population an equal chance of being chosen. This can be achieved using random number tables.

Back

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Card 10

Front

This is random sampling with a system! From the sampling frame, a starting point is chosen at random, and thereafter at regular intervals. For example, suppose you want to sample 8 houses from a street of 120 houses. 120/8=15, so every 15th house

Back

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Card 11

Front

In this method the units sampled are chosen in clusters, close to each other. Examples are households in the same street, or successive items off a production line. The population is divided into clusters, and some of these are then chosen at

Back

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Card 12

Front

In this method the selection of the sample is made by the interviewer, who has been given quotas to fill from specified subgroups of the population. For example, an interviewer may be told to sample 50 females between the age of 45 and 60.

Back

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Card 13

Front

This method will give a sample proportional to the size of the strata.

Back

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