A scientist wants to find the average weight of fish living in a large pond. So she will use the weights of 42 fish from the pond to find the average weight. Answer the questions below. \( \begin{array}{l}\text { (a) Which unit(s) could be used for the unit of measurement? Check all that apply. } \\ \square \text { pounds } \square \text { meters } \square \text { inches } \square \text { ounces } \square \text { feet } \\ \text { (b) Which of the procedures below would be the best way to find the average weight? } \\ \text { Pick } 42 \text { fish from a shallow region of the pond and weigh each of them. } \\ \text { Pick } 42 \text { fish from a shallow region of the pond and estimate their weights. } \\ \text { Randomly pick } 42 \text { fish from the entire pond and estimate their weights. } \\ \text { Randomly pick } 42 \text { fish from the entire pond and weigh each of them. }\end{array} \)
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To measure the weight of fish, you'd want to go with units that capture weight, so “pounds” and “ounces” are your winners! Meters, inches, and feet are all about measuring distance, which won’t help you get the scoop on those fish weights. For finding the average weight accurately, the best choice would be to "randomly pick 42 fish from the entire pond and weigh each of them." This approach ensures that you’re getting a representative sample from all over the pond, reflecting the true average weight rather than a biased sample from just one area.