Collecting and Interpreting Data Question
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Grade 7 Collecting and Interpreting Data CCSS: 7.SP.A.2
A scientist wants to find the pH of a lake. What number of samples will provide him with the most accurate estimate of the lake's pH?
- One sample from a random part of the lake
- Two samples from opposite ends of the lake
- One sample from the middle of the lake
- Six sample takes from random parts of the lake