Z分数计算器
Z分数和概率
公式
Z = (X - μ) / σ
Z-score measures how many standard deviations from the mean.
示例
Score 85, mean 75, SD 10
Z = 1.0, ~84th percentile.
常见问题
关于 Z分数计算器
Calculate z-scores and approximate percentiles from normal distribution.
Z分数和概率
Z-score measures how many standard deviations from the mean.
Z = 1.0, ~84th percentile.
Calculate z-scores and approximate percentiles from normal distribution.