01 // Chart StudioBOXPLOT
Box Plot for Test Score Quartiles — Multi-School & Cohort Exam Spread
A test score quartile box plot maps the 25th percentile ($Q_1$), median ($Q_2$), and 75th percentile ($Q_3$) across student cohorts to evaluate both central achievement and score equity.
SUM / TOTAL462
MEAN (AVG)77
MEDIAN (P50)77
MIN71
MAX83
STD DEV (s)4.29
CHANGE % / CAGR+2.6% (+0.5%)
Hover or tap any bar, point, or slice on the chart to see exact numbers.
Chart Data (6)
Tip: Paste Excel or Google Sheets rows (Ctrl+V / ⌘V) directly into any cell.
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How Values Are Scaled
Middle 50% score span: IQR = Q3 - Q1. Semi-interquartile range (Quartile Deviation): QD = (Q3 - Q1) / 2.
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Chart Design & Use-Case Tips
- 01Middle 50% score span: IQR = Q3 - Q1. Semi-interquartile range (Quartile Deviation): QD = (Q3 - Q1) / 2.
- 02A high median paired with a compact IQR box indicates consistently strong mastery across the entire classroom.
- 03A wide IQR box (e.g., Q1 = 58, Q3 = 84) indicates high spread between struggling and top-quartile students.
- 04Ideal for academic assessment reports, admissions percentile summaries, and curriculum reviews.
Frequently Asked Questions
What does it mean if a student scores at Q3?+
Scoring at Q3 (the 75th percentile, top edge of the box) means the student performed equal to or better than 75% of all test-takers in that cohort.
Why do standardized tests (SAT, GRE, MCAT) report percentiles alongside scores?+
Raw test difficulty varies slightly across subjects; quartile boxes show where a score sits relative to the peer distribution.
Can I export this chart for an academic paper or board presentation?+
Yes, use the Vector SVG or 300-DPI PNG export buttons for publication-grade output.