Question

a scientist wants to find the average weight of fish living in a large pond. so she will use the weights of 52 fish from the pond to find the average weight. answer the questions below. (a) which unit(s) could be used for the unit of measurement? check all that apply. centimeters feet pounds inches ounces (b) which of the procedures below would be the best way to find the average weight? pick 52 fish from a shallow region of the pond and weigh each of them. pick 52 fish from a shallow region of the pond and estimate their weights. randomly pick 52 fish from the entire pond and estimate their weights. randomly pick 52 fish from the entire pond and weigh each of them.

Explanation:

Part (a)

To measure weight, we need units of weight. Centimeters, feet, and inches are units of length, while pounds and ounces are units of weight. So we check the units that measure weight.

To find the average weight of all fish in the pond, the sample should be representative of the entire pond (so random selection from the entire pond, not just shallow region) and we should weigh the fish (not estimate, as estimation is less accurate) to get precise data. So the best procedure is to randomly pick 52 fish from the entire pond and weigh each of them.

Answer:

pounds, ounces

Part (b)