Enhanced ACT Glossary — Key Terms & Definitions
- Absolute Value
- Arithmetic Sequence
- Author's Purpose
- Axis of Symmetry
- Change of Base Formula
- Combination
- Comma Splice
- Completing the Square
- Complex Number
- Composite Score
- Compound Predicate
- Conditional Probability
- Conflicting Viewpoints
- Confounding Variable
- Conjugate
- Conservation Laws
- Control Group
- Coordinate Adjectives
- Correlation Coefficient (r)
- Dangling Modifier
- Data Representation
- Denaturation
- Dependent (Subordinate) Clause
- Dependent Variable (DV)
- Determinant
- Development and Support
- Direct Variation
- Discriminant
- Distance Formula
- Distractor
- Enhanced ACT
- Equating
- Evidence Rule
- Expected Value
- Extrapolation
- Factor Theorem
- Coordinating Conjunctions: For, And, Nor, But, Or, Yet, So (FANBOYS)
- Five-Number Summary
- Function
- Function Transformation
- Fundamental Counting Principle
- Geometric Sequence
- Greatest Common Factor (GCF)
- Hypothesis
- Ideas and Analysis
- Idiom
- Imaginary Unit (i)
- Independent Clause
- Independent Variable (IV)
- Inference
- Interpolation
- Interquartile Range (IQR)
- Inverse Variation
- Law of Cosines
- Law of Sines
- Least Common Multiple (LCM)
- Logarithm
- Main Idea
- Matrix Multiplication
- Midpoint Formula
- Modulus
- Paired Passage
- Parallelism
- Passage Map
- Percent Change
- Percentile
- Permutation
- Production of Writing
- Pronoun-Antecedent Agreement
- Pythagorean Theorem
- Pythagorean Triple
- Quadratic Formula
- Radian
- Reference Angle
- Research Summaries
- Run-on (Fused Sentence)
- Sinusoid Parameters
- Slope-Intercept Form
- Sine, Cosine, and Tangent Mnemonic (SOH-CAH-TOA)
- Special Right Triangles
- Standard Deviation
- Science, Technology, Engineering, and Mathematics (STEM) Score
- Subject-Verb Agreement
- System of Equations
- Tone
- Transition
- Triage
- Unit Circle
- Vertex Form
- Vieta’s Formulas
- Vocabulary-in-Context
- Weighted Mean
- ACT Core Test
- English Test
- Reading Test
- Raw Score
- Conventions of Standard English
- Knowledge of Language
- Key Ideas and Details
- Craft and Structure
- Integration of Knowledge and Ideas
- Preparing for Higher Math
- Integrating Essential Skills
- Modeling
- Number and Quantity
- Algebra
- Geometry
- Statistics and Probability
- Interpretation of Data
- Scientific Investigation
- Evaluation of Models, Inferences, and Experimental Results
- Appositive
- Nonessential Element
- Restrictive Clause
- Misplaced Modifier
- Pronoun Case
- Verb Tense Consistency
- Rhetorical Purpose
- Logical Sequence
- Textual Evidence
- Point of View
- Comparative Reading
- Line of Best Fit
- Residual
- Margin of Error
- Random Sample
- Experimental Design
- Placebo
- Replication
- Conventions: Grammar & Usage
- Conventions: Sentence Structure
- Conventions: Punctuation
- Functions