如何计算散点图上回归线上方和下方的点数？
data = read.csv("info.csv")
par(pty = "s")
plot(data$col1, data$col2, xlab = "xaxis", ylab = "yaxis", xlim = c(0,
1), cex.lab = 1.5, cex.axis = 1.5, ylim = c(0, 1), col.lab = "red",
col = "blue", pch = 19)
abline(a = -1.21, b = 2.21)