Hypothesis:
If the plant seed is electrified at the highest voltage for the longest time, then the plant Raphanus sativus seed will germinate faster than a seed given low voltage and a short electrification time.
Data measurement:
The two independent variables are the amount of time (seconds) the plant is electrified and the measure of voltage (volts) applied to the seeds. The dependent variable is the growth/germination of the plant measured in millimeters (mm). The statistical method used to analyze the data was a two-factor Design of Experiment (DOE). The Design of Experiment factors are voltage and time electrified. The voltage values are 6 volts, 9 volts, and 12 volts. These values were determined after research online was conducted on the topic. Past experiments used batteries with voltages of 90, 110, 120, and generators. The only values that would be safe to use in a high school environment would be any values around the 9 volts, 110 and 120 volts are too dangerous. So, it was decided that the standard would be 9 volts and the other values would be 6 volts and 12 volts, so that they are of equal value difference from 9. The other factor is time electrified. From the past experiments, there was much variation in the values determined. The most common times used were 30 seconds, 1 minute, and 1.5 minutes. Since these values occurred the most, they were chosen to be used in the experiment.