Answer: The total amount of the hummingbirds' weight is 15 grams.
Explanation:
As it is shown in the dot graph, the four hummingbirds' weigh is recorded to the nearest gram.
Hummingbird 1 - 2 1/2
Hummingbird 2 - 3
Hummingbird 3 - 4 1/2
Hummingbird 4 - 5
2 1/2 + 4 1/2 = 7
3 + 5 = 8
Seven plus eight equals to fifteen. Therefore, the total weight of all four hummingbirds is 15.
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