箱ひげ図
vals = {
"stage51" => [12.2, 18.8, 18.2],
"stage55" => [22.2, 20.5, 14.6],
"stage57" => [20.8, 19.5, 26.3],
"stage59" => [26.4, 32.5, 31.3],
"stage61" => [24.5, 21.2, 22.4],
}
oneWay = Num4AnovaLib::OneWayLayoutLib.new
oneWay.boxWhiskerPlot("LDH", vals)