Data which seem to be in poor agreement can produce quite high correlations. For example, Serfontein and Jaroszewicz 2 compared two methods of measuring gestational age.Babies with a gestational age of 35 weeks by one method had gestations between 34 and 39.5
weeks by the other, but r was high (0.85). On the other hand, Oldham et al. 3 compared the mini and large Wright peak flow meters and found a correlation of 0.992. They then connected the meters in series, so that both measured the same flow, and obtained a "material improvement" (0.996). If a correlation coefficient of 0.99 can be materially improved upon, we need to rethink our ideas of what a high correlation is in this context. As we show below,
the high correlation of 0.94 for our own data conceals considerable lack of agreement between the two instruments.
Data which seem to be in poor agreement can produce quite high correlations. 符合性似乎很差的数据可能产生很高的相关性。For example, Serfontein and Jaroszewicz 2 compared two methods of measuring gestational age.例如，Serfontein and Jaroszewicz【2】 比较了两种测量胎龄的方法。Babies with a gestational age of 35 weeks by one method had gestations between 34 and 39.5 weeks by the other, but r was high (0.85). 胎龄35周的胎儿用一种方法，妊娠34和39.5周之间的用另一种方法。On the other hand, Oldham et al. 3 compared the mini and large Wright peak flow meters and found a correlation of 0.992. 另一方面，Oldham等人【3】比较了小型和大型赖特峰值流量计，并发现0.992的相关性。They then connected the meters in series, so that both measured the same flow, and obtained a "material improvement" (0.996).然后他们将仪表串联连接，这样两台仪表都测量同样的流量，并得到“实质性的改善”（0.996）。 If a correlation coefficient of 0.99 can be materially improved upon, we need to rethink our ideas of what a high correlation is in this context.如果0.99的相关系数能得到实质性的改善，那我们对在此背景下什么才是高的相关性的概念就需要重新思考了。 As we show below, the high correlation of 0.94 for our own data conceals considerable lack of agreement between the two instruments正如我们在下面证明的，对于我们自己的数据，0.94的高相关性掩盖了两台仪表之间符合性相当大的缺乏。
几星期由其他，但r高(0.85)。 另一方面，奥德翰等。 3 比较了微型和大怀特洪峰米并且发现了交互作用 0.992。 他们在系列然后连接了米，因此两个测量了同一流程，并且获得了“物质改善” (0.996)。 如果可以物质改进相关系数0.99，我们需要重新考虑高交互作用我们的想法在这上下文。 我们下面显示，
高交互作用0.94为我们自己的数据隐瞒可观的缺乏协议在二台仪器之间。
