Rの「前の状態」が「後の状態」に影響を与えるかどうかをテストする方法
状況を想像してみてください。3つの鉱山の歴史的な記録(20年)があります。銀の存在は来年金を見つける確率を高めますか?そのような質問をテストする方法は? 以下はデータの例です。 mine_A <- c("silver","rock","gold","gold","gold","gold","gold", "rock","rock","rock","rock","silver","rock","rock", "rock","rock","rock","silver","rock","rock") mine_B <- c("rock","rock","rock","rock","silver","rock","rock", "silver","gold","gold","gold","gold","gold","rock", "silver","rock","rock","rock","rock","rock") mine_C <- c("rock","rock","silver","rock","rock","rock","rock", "rock","silver","rock","rock","rock","rock","silver", "gold","gold","gold","gold","gold","gold") time <- seq(from = 1, to = 20, by = 1)