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Terms in this set
- Metric System A base-10 measurement system built on the meter (length), gram (mass), and liter (volume), with prefixes kilo- (1000), hecto- (100), deka- (10), deci- (0.1), centi- (0.01), and milli- (0.001).
- Unit Conversion & Dimensional Analysis Converting between units by multiplying by conversion factors written as fractions equal to 1, arranged so unwanted units cancel — the method behind dosage calculations.
- Mean, Median, Mode & Range Mean is the sum divided by the count; median is the middle value of an ORDERED list (average the two middle values if the count is even); mode is the most frequent value; range is maximum minus minimum.
- Charts & Graphs Reading and interpreting bar graphs (compare categories), line graphs (change over time), circle/pie graphs (parts of a whole), histograms (frequency of numeric ranges), and scatter plots (relationship between two variables).
- Correlation & Trends The relationship shown by paired data: a positive correlation rises together, a negative correlation falls as the other rises, and no correlation shows no pattern — visible as the drift of points on a scatter plot.
- Independent & Dependent Variables The independent variable is what is deliberately changed or chosen (plotted on the x-axis); the dependent variable is what responds and gets measured (plotted on the y-axis).
- Perimeter, Area, Circumference & Volume Perimeter is the distance around a figure (add the sides); area measures the surface inside (rectangle: length x width; triangle: half base x height; circle: pi r squared); circumference is a circle's perimeter (2 pi r); volume fills a solid (box: length x width x height).