x= c(229, 232, 239, 232, 259, 361, 220, 260, 231, 229, 249, 254, 257, 214, 237, 253, 274, 230,223, 253, 195, 269, 231, 268, 189, 290, 218, 313, 220, 270, 277, 375, 222, 290, 231, 258,227, 269, 220, 224)