Datenvisualisierung Infografik zu Best Practices für Liniendiagramme

Data visualization infographic titled "Line Chart Best Practices" using TREND LINE (over time) as the dominant visual element, designed to teach inequality storytelling through a clear multi-series line chart example. Show a 10-year time series from 2015 to 2024 with sharp x-axis labels "2015" to "2024" and y-axis labeled "Index Value" with full tick marks from 0 to 140 in 20-point intervals, explicitly using a zero baseline and honest scaling with no truncation. Main chart should compare three groups to reveal widening inequality: "Top 10% Income Group" rising from 100 in 2015 to 138 in 2024, "Middle 40% Income Group" rising modestly from 100 to 112, and "Bottom 50% Income Group" nearly flat from 100 to 103. Make the gap visually legible but statistically honest, with direct line labels at the right edge instead of a cluttered legend. Include subtle annotations showing divergence beginning around 2019 and widening sharply by 2022-2024. Add 4 key insight callouts around the chart, each with a headline number, short interpretation in English, and a small icon: 1) "35-point gap" — "Difference between top and bottom groups by 2024 illustrates widening inequality" with a small gap / arrows icon; 2) "+38%" — "Top group grows far faster than the rest over the period" with a small upward trend icon; 3) "+3%" — "Bottom group shows near-stagnation despite overall growth" with a small flat line icon; 4) "2019 turning point" — "After this year, divergence becomes much more visible" with a small warning / spotlight icon. Add a compact side panel titled "Best Practices Shown" with short checklist labels in English such as "Zero baseline", "Direct labels", "Consistent time intervals", "No chartjunk", and "Comparable scale". Add a small mini-panel titled "Avoid" with tiny muted examples of bad practice: truncated y-axis, too many colors, unlabeled lines, and distorted smoothing, each crossed out. Include a bottom strip labeled "Source / Data Note" with text: "Illustrative example for line chart design best practices. Figures are illustrative, not sourced empirical data." Visual style: Reuters / Economist editorial, dark mode neon palette, deep charcoal background, electric cyan for the top line, vivid magenta for the middle line, neon yellow-green for the bottom line, restrained gridlines, elegant typography, high contrast, precise financial-newsroom layout, 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.