Graph Design Examples: Line Chart Best Practices Infographic

Data visualization infographic titled "Line Chart Best Practices" using a TREND LINE (over time) as the dominant visual element. Show a clean time-series chart with one main line across 12 monthly periods labeled in English: "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec". Y-axis label in English: "Metric value (illustrative)" with sharp tick marks at 0, 20, 40, 60, 80, 100, 120. X-axis label in English: "Month". Use a realistic illustrative series that is mostly stable with one clear surprise outlier spike, for example values near 42, 45, 44, 46, 47, 45, 48, 92, 50, 49, 51, 53. Highlight the outlier month with a contrasting accent ring and annotation, while keeping the full axis scale visible from zero to avoid misleading truncation or scale manipulation. Include subtle guide elements that visually demonstrate best practices: direct line labeling, light gridlines, readable spacing, restrained legend use, and a clear note that the outlier is emphasized honestly without distorting the baseline. Add 4 key insight callouts with headline numbers, short interpretations in English, and small icons: "92" + "Outlier spike stands far above the baseline" + alert icon; "47" + "Typical monthly level before the spike" + steady trend icon; "+44" + "Largest month-to-month jump occurs at the anomaly" + upward arrow icon; "0-120" + "Full y-axis range shown for honest context" + ruler icon. Add a small secondary mini-panel or tiny comparison inset showing a bad example versus good example of axis treatment, clearly labeled in English: "Bad: truncated axis" and "Good: full scale", but keep the main trend line chart dominant. Include a compact checklist area in English with short labels such as "Start at zero when appropriate", "Label the outlier directly", "Use consistent intervals", "Avoid clutter", "Explain the surprise". Visual style: minimal flat, rainbow categorical palette used sparingly for accents and callouts, clean white or very light neutral background, crisp vector lines, modern editorial layout, balanced whitespace, calm analytical mood with one vivid outlier highlight. Include a small SOURCE / DATA-NOTE strip in English reading: "Data note: Illustrative example for chart design best practices. Figures are illustrative unless sourced by the user." Include the phrase "editorial data journalism illustration, FT / Bloomberg-grade chart aesthetics, vector-clean infographic layout". All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no fake authoritative sources cited, no watermarks Numbers labeled "illustrative" unless the user supplied specific sourced data. No fake authoritative sources cited (do not invent "Source: Reuters 2025" — use "Illustrative example" instead). No misleading axis truncation or scale manipulation.