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43 votes
43 votes
To collect data about the amont of time spent​

To collect data about the amont of time spent​-example-1
User Juanal
by
3.2k points

2 Answers

9 votes
9 votes
A or survey 20 randomly selected students from each grade.
User Vadirn
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2.7k points
10 votes
10 votes

Answer:

Probably the first one because the other two questions would be un-reliable

Explanation:

User Neil Neyman
by
3.0k points
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