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16 Nov 2021
Given information
In 1936, a magazine sent post cards to approximately 10,000,000 prospective voters. These prospective voters were selected from the subscription list of the magazine, from automobile registration lists, from phone lists, and from club membership lists. Approximately 2,300,000 people returned the postcards.
Step-by-step explanation
Step 1.
From the previous task, the bias introduced in the sample was down to the method adopted for sampling. Therefore the error is an example of sampling error.
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