Based on the data provided, what was *most likely* the independent variable in this investigation? {:.utp-table} | Amount of Caffeine | Heart Rate (bpm) at Rest | Heart Rate (bpm) After 5 Min. Exercise | Heart Rate (bpm) After 10 Min. Exercise | |:------------------:|:------------------------:|:--------------------------------------:|:---------------------------------------:| | 0 mg | 72 | 85 | 91 | | 5 mg | 78 | 88 | 95 | | 10 mg | 80 | 92 | 98 | | 15 mg | 81 | 91 | 102 |

Question 3 - Science Practice Test for the NLN NEX

Based on the data provided, what was most likely the independent variable in this investigation?

Amount of Caffeine	Heart Rate (bpm) at Rest	Heart Rate (bpm) After 5 Min. Exercise	Heart Rate (bpm) After 10 Min. Exercise
0 mg	72	85	91
5 mg	78	88	95
10 mg	80	92	98
15 mg	81	91	102

Create a totally FREE account to save your progress and scores.