138k views
13 votes
To collect data about the amont of time spent​

To collect data about the amont of time spent​-example-1
User Clsung
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6.7k points

2 Answers

9 votes
A or survey 20 randomly selected students from each grade.
User Smartie
by
7.4k points
5 votes

Answer:

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

Explanation:

User Arthur Zhang
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6.9k points