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mixas84 [53]
3 years ago
15

I don't know how to

Mathematics
1 answer:
aliina [53]3 years ago
7 0
Substitute x values into y= -x and plot them. So when x = -1 then y= -(-1) which is 1.

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Andrei [34K]

The sample used in this problem is classified as cluster.

<h3>How are samples classified?</h3>

Samples may be classified as:

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  • Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
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For this problem, a group of schools is selected, and then the new program is applied to all students in these school, meaning that all elements in the cluster are surveyed, so cluster sampling is used.

More can be learned about classification of samples at brainly.com/question/25122507

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Answer:

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