箱线图 (Box Plot), 直方图 (Histogram), 折线图 (Line Chart) 在线制作
箱线图 (Box Plot) https://www.createparetochart.com/Box-Plot.html
中文： 通过五数概括（中位数、上下四分位数、极值）展示数据分布。适用于多组数据分布对比、快速发现异常值与偏态。注意：无法显示双峰形状，需配合直方图；样本太少时四分位数不稳定。
English: Shows data distribution via five-number summary (median, quartiles, extremes). Use for comparing multiple groups, spotting outliers and skewness. Note: cannot reveal bimodality—pair with a histogram; quartiles are unstable with too few samples.
直方图 (Histogram) https://www.createparetochart.com/Histogram.html
中文： 连续数据分箱后的频率分布柱状图。适用于查看分布形状、判断正态 / 偏态、评估过程能力。注意：分箱数量会改变观感，多试几种；分类数据请用条形图。
English: Binned frequency distribution of continuous data. Use for examining distribution shape, checking normality/skewness, and process capability assessment. Note: bin count changes the visual impression—try several; use bar charts for categorical data.
折线图 (Line Chart) https://www.createparetochart.com/Line-Chart.html
中文： 用连线展示有序变量下的数值变化趋势。适用于时间趋势、多系列演变对比、季节性与突变识别。注意：X 轴必须有序，不适合纯类别；系列过多会成一团（建议≤5 条）。
English: Connected lines showing trends across ordered variables. Use for time trends, multi-series comparison, and detecting seasonality or jumps. Note: X-axis must be ordered—not for pure categories; too many series become a mess (recommend ≤5).
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