共 50 条
- [2] THE UNBIASED ESTIMATE OF THE POPULATION VARIANCE AND STANDARD DEVIATION AMERICAN JOURNAL OF PSYCHOLOGY, 1950, 63 (04): : 615 - 617
- [6] Practical calculation of mean, pooled variance, variance, and standard deviation, in meta-analysis studies NURSING PRACTICE TODAY, 2020, 7 (01): : 5 - 11
- [10] AN IMPROVED METHOD FOR CALCULATING THE STANDARD-DEVIATION AND VARIANCE OF PALEOCURRENT DATA JOURNAL OF SEDIMENTARY PETROLOGY, 1987, 57 (04): : 779 - 780