SAT Problem-Solving and Data Analysis Practice
Practice ratios, percentages, statistics, and data.
Ratios, units, percentages, probability, statistics, tables, and graphs. All in one focused set.
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Pick what to practice.
- 01Ratios, rates, and unitsRates, ratios, and unit conversions: miles per gallon, pages per minute, exchange rates, density, and splitting a total in a ratio like 2 : 3 : 5.
- 02PercentagesPercent of a number, percent increase and decrease, markups, discounts, tax, and one percent change followed by another.
- 03One-variable dataMean, median, mode, range, and standard deviation. You find them, compare two data sets, and say how they change when a value is added, removed, or changed.
- 04Scatterplots and two-variable dataLines of best fit, residuals, and correlation, plus choosing a linear or exponential model for data in a table.
- 05ProbabilitySimple probability, combined events, and conditional probability, often from a two-way table or a description of groups.
- 06Sample statistics and margin of errorUse a random sample to estimate a whole population, read a margin of error as a range of likely values, and compare samples of different sizes.
- 07Observational studies and experimentsDecide what a study can conclude. Random sampling lets results apply to a larger population. Random assignment to groups lets a study show cause and effect.
Easy mistakes to make.
- Using the original amount when the question requires the new amount
- Mixing units inside a rate
- Treating correlation as proof of causation
- Generalizing beyond the population represented by a sample
Build the set you need.
Write the unit beside every number. If a rate is backwards or two values should not be compared, the units usually give it away.
Every explanation is free. Pick the section, skill, difficulty, and length of your next set.
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