Question

a scientist wants to find the average weight of fish living in a large pond. so she will use the weights of 25 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 25 fish from a shallow region of the pond and estimate their weights. pick 25 fish from a shallow region of the pond and weigh each of them. randomly pick 25 fish from the entire pond and weigh each of them. randomly pick 25 fish from the entire pond and estimate their weights.

Explanation:

(a) Centimeters, feet, and inches are units of length, not weight. Pounds and ounces are units of weight.
(b) To get an accurate average weight, the sample should be random (to avoid bias) and actual weights (not estimates) should be used. Picking from the entire pond (not just a shallow region) gives a more representative sample.

Answer:

(a) pounds, ounces
(b) Randomly pick 25 fish from the entire pond and weigh each of them.