-Either no or much too number of sample observations ended up available to compute an estimate, or a ratio of medians cannot be calculated mainly because just one or both equally from the median estimates falls in the bottom or higher interval of an open up ended distribution. บุหรี่ไฟฟ้าใช้แล้วถึงเหมาะกับมือใหม่หัดสูบเพราะใช้งานง่าย ไม่ซับซ้อน https://ksquik22108.blogsvirals.com/26223474/5-essential-elements-for-ks-quik