四、挑选性科学研究的数据要求真实可靠,除了不应该有意或无意地挑选研究对象,以免作对比的各组产生偏性外,对已记录的科学数据、统计方法,也不应按主观意愿作挑选。 (一) 挑选数据 [例15] 某人研究正常人血中白细胞数,以求制定白细胞数的正常值范围。经调查,在一批正常人群中,发现有些人白细胞数偏高,有些人偏低,研究者怀疑这些偏高偏低者并非真正的正常人,可能是 Fourth, the data of the selected scientific research are truthful and reliable. Apart from that the research subjects should not be selected consciously or unconsciously, so as to avoid biases in the comparative groups, the recorded scientific data and statistical methods should not be subjective For selection. (A) Selection data [Example 15] Someone studies the normal white blood cell count in order to make a normal white blood cell count range. After investigation, in a group of normal population, some people found that the number of high white blood cells, some people are low, the researchers suspect that these high and low are not really normal, may be