Statistics · Module 3
Answers and explanations · Make a chart that answers a specific question
Compare these references after your own attempt. You can read them at any time; they do not record a live model or vendor run.
Statistics · Module 3
Compare these references after your own attempt. You can read them at any time; they do not record a live model or vendor run.
3A. Duration distribution: equal-bin histogram, x=minutes, y=shipment count. Late by service: category bars or dots, y=late percentage and labels=count/denominator. Over weeks: line chart, x=ordered week and y=late percentage, with denominators. Distance versus duration: scatterplot, x=km and y=minutes. Other well-labelled designs can work if they preserve the intended comparison.
3B. Use a zero-baseline bar chart with values 48% and 52%, and supply the actual group counts/denominators rather than inventing them. A defensible title is “Recorded rate differs by 4 percentage points”; the outcome and period must be added when known. The rates did not double: 52/48≈1.083, an 8.33% relative increase. The truncated baseline inflated the visual ratio.
3C. “In this separate illustrative table, East had 18/120 late shipments (15%) and West had 12/120 (10%), so West’s observed rate was 5 percentage points lower. Route and service mix may differ, so this descriptive comparison does not establish a causal hub effect.” This communicates the important comparison without depending on color.