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The assumptions we use to determine the validity of predictions include: A. The sample should be...

The assumptions we use to determine the validity of predictions include:

A. The sample should be paired data, with two variables: x and y

B. The standard deviation of each dependent variable must be exactly the same as for each of the dependent variables

C. The sample is a random sample

D. The sample is collected using a cluster sampling method

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Answer #1

The assumptions we use to determine the validity of predictions include that:

C. The sample is a random sample.

Option C is correct.

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