Question 22 - Science Practice Test for the HiSET Test

What is the independent variable in Dr. Smith’s experiment?

Trial#	Type of Fertilizer	Number of Plants Tested	Amount of Fertilizer Used \((\frac{lb}{ft^2})\)	Average Plant Height \((ft)\)	Tomato Yield \((\frac{lb}{plant})\)
1	No Fertilizer	25	0.00	2.00	7.00
2	Traditional Fertilizer A	25	2.00	2.50	7.70
3	Traditional Fertilizer B	25	2.00	3.00	8.50
4	Novel Fertilizer	25	2.00	2.80	8.20

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