摘要
The author discussed the problem of multi phase ratio estimation, put forward an approximate formula and asymptotic unbiased estimate for the mean square sample deviation of ratio estimate.
The author discussed the problem of multi phase ratio estimation, put forward an approximate formula and asymptotic unbiased estimate for the mean square sample deviation of ratio estimate.
出处
《统计研究》
CSSCI
北大核心
2001年第3期48-50,共3页
Statistical Research
