연령과 뉴스 이용은 함께 움직이지만 인과를 뜻하지 않는다

if (v.kind === "correlation") {
  a.push(
    T(0, 35, "A  Observed age × TV-news frequency", 30, C.ink, 700),
    T(1000, 35, "B  " + v.label + " correlation", 30, C.ink, 700),
    T(1000, 62, (v.id === "pearson" ? "r" : "ρ") + " [95% CI]", 20, C.muted),
  );
  let pp = plotFrame({
    x: 80,
    y: 100,
    w: 760,
    h: 395,
    xRange: [15, 95],
    yRange: [0, 7],
    xTicks: [20, 40, 60, 80],
    yTicks: [0, 2, 4, 6],
    xLabel: "Age (years)",
    yLabel: "TV news (times/week)",
  });
  a.push(...pp.a);
  for (const b of v.bubbles)
    a.push(
      G(
        [
          node("circle", {
            cx: pp.X(b.x),
            cy: pp.Y(b.y),
            r: Math.sqrt(b.count) * 3.6,
            fill: C.blue,
            "fill-opacity": 0.38,
            stroke: C.blue,
            "stroke-width": 0.6,
          }),
        ],
        b.key,
      ),
    );
  let labs = ["Age", "News", "Educ.", "Urban"];
  for (let i = 0; i < 4; i++) {
    a.push(
      T(1000 + i * 150 + 65, 90, labs[i], 25, C.ink, 650, "middle"),
      T(970, 153 + i * 100, labs[i], 23, C.muted, 400, "end"),
    );
    for (let j = 0; j < 4; j++) {
      let r =
        i === j
          ? 1
          : v.pairs.find((p) => p.i === Math.min(i, j) && p.j === Math.max(i, j));
      let val = i === j ? 1 : r.r;
      a.push(
        G(
          [
            R(
              995 + j * 150,
              110 + i * 100,
              140,
              90,
              i === j ? C.wash : val > 0 ? "#DCE9F3" : "#EAF2F1",
            ),
            T(1065 + j * 150, 153 + i * 100, fmt(val, 2), 32, C.ink, 650, "middle"),
            ...(i === j
              ? []
              : [
                  T(
                    1065 + j * 150,
                    184 + i * 100,
                    "[" + r.ci.map((x) => fmt(x, 2)).join(", ") + "]",
                    21,
                    C.muted,
                    400,
                    "middle",
                  ),
                ]),
          ],
          i === j ? undefined : r.key,
        ),
      );
    }
  }
  a.push(
    T(995, 557, "All pairs n = 944 · point area = observed count", 25, C.muted),
    T(
      10,
      622,
      "No jitter or fabricated observations. Correlation does not identify a causal relation.",
      26,
      C.muted,
    ),
  );
  note =
    v.id === "spearman"
      ? "Ordinal sensitivity:rank-pair percentile bootstrap, 2000 draws. Matrix intervals are pointwise,not simultaneous."
      : "Pearson intervals use Fisher-z. Numeric-coded education is not an equal-interval measurement.";
  source =
    'flowchart LR\n A["Age"] --- N["TV news"]\n E["Education"] --- N\n U["Urban scale"] --- N\n N --> R["Association + uncertainty"]';
  map = {
    A: v.key,
    N: v.key,
    E: v.pairs.find((x) => x.i === 1 && x.j === 2)?.key,
    U: v.pairs.find((x) => x.i === 1 && x.j === 3)?.key,
    R: v.key,
  };
}