Collecting and Interpreting Data Question
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Grade 7 Collecting and Interpreting Data CCSS: 7.SP.A.1
A naturalist wants to discover what kind of rocks are found in a national park. Which of the following samples will give the most accurate representation of the kinds of rocks in the park?
- 75 rocks picked up off the surface of the ground
- 75 rocks dug up from under the surface
- 75 rocks from a underground cave
- 25 rocks from each of the three locations