Comprehensive, high-yield SAT study deck focusing on Math - Problem Solving Data (Unit 3). Features 50 rigorous, curriculum-aligned flashcards designed for intermediate-level mastery. Core concepts covered include Old Value, Percentage Change, New Value, key problem-solving heuristics, foundational formulas, and exam-tested application scenarios. Ideal for active recall review, spaced repetition study, and scoring in the top percentile.
What is the formula for percentage change between an old value and a new value?
If a price of an item is discounted by 20% and then the discounted price is increased by 20%, is the final price equal to the original price?
What is the difference between the mean and the median of a data set?
In a positively skewed (right-skewed) distribution, what is the typical relationship between the mean and the median?
In a negatively skewed (left-skewed) distribution, what is the typical relationship between the mean and the median?
What does 'standard deviation' measure in a data set?
If every value in a data set is increased by 5, what happens to the mean and standard deviation?
If every value in a data set is multiplied by 3, what happens to the mean and standard deviation?
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