Mean, Median, Mode, and Range
When scientists collect data, they need a few numbers that sum up the whole set. The four you will use most on the test are the mean, median, mode, and range. Each describes the data in a different way, and knowing which one a question wants is half the battle. Continue your GED preparation Practice […]
Percentages and Percent Change in Science
Percentages are everywhere in science: a population grows by a percentage, a chemical yields a percentage of product, a measurement changes by a percent from one trial to the next. The single most tested version is percent change — how much something went up or down compared to where it started. One formula handles all […]
