\Ruby has observed that plants in her garden vary in height. She wants to investigate whether a plant species (species A) grows faster than the other garden species (species B, C, and D). Select the statement that describes Ruby gathering enough evidence to support a scientific explanation concerning plant growth rates.
Note: Consider reviewing how Ruby developed her conclusion on page 8 of this lesson to select the best answer.
(1 point)
Responses
Ruby measures the heights of several species A, B, C, and D plants for a week under different conditions and finds a journal article that describes the growth rate of species A.
Ruby measures the heights of several species A, B, C, and D plants for a week under different conditions and finds a journal article that describes the growth rate of species A.
Ruby measures the heights of several species A, B, C, and D plants, each species for one week at a time for four consecutive weeks.
Ruby measures the heights of several species A, B, C, and D plants, each species for one week at a time for four consecutive weeks.
Ruby measures the height of a species A plant for a week and finds an anonymous gardening blog that describes the growth rate of species A.
Ruby measures the height of a species A plant for a week and finds an anonymous gardening blog that describes the growth rate of species A.
Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.
Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.
Skip to navigation
Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.
You weigh 5 kittens all from the same litter and get the following data (in pounds):
1.05, 1.2, 1.15, 1.2, 1.4.
Calculate the average weight of the kittens, in pounds.
(1 point)
Responses
1.2
1.2
1.15
1.15
1.3
1.3
1.0
To calculate the average weight of the kittens, you add up all the weights (1.05 + 1.2 + 1.15 + 1.2 + 1.4) and divide the sum by the number of kittens (5).
(1.05 + 1.2 + 1.15 + 1.2 + 1.4) / 5 = 1.2
Therefore, the average weight of the kittens is 1.2 pounds.
The correct answer is 1.2.
The correct statement that describes Ruby gathering enough evidence to support a scientific explanation concerning plant growth rates is:
Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.
This statement shows that Ruby is conducting a controlled experiment by measuring the heights of different plant species under the same conditions. By finding journal articles that describe the growth rates of each species, Ruby is gathering scientific evidence to support her investigation on whether species A grows faster than the other species.