100 ( 1 − α ) % CI : ρ ∈ {\displaystyle 100(1-\alpha )\%{\text{CI}}:\rho \in } For example, suppose we observe r = 0.3 with a sample size of n=50, and we wish to obtain a 95% confidence interval for ρ.
100 ( 1 − α ) % CI : ρ ∈  {\displaystyle 100(1-\alpha )\%{\text{CI}}:\rho \in } 举例来说，假设我们观测到 r = 0.3，样本容量 n=50，并且我们期望获得ρ的95%的信賴区间。