当出现了负的误差方差该怎么办呀?怎么调整呢?Notes for Model (Group number 1 - Default model) The following variances are negative. (Group number 1 - Default model)err1-.437 The following covariance matrix is not positive definite (Group number 1 - Default model)学习水平学习意愿学习水平-.001学习意愿.116-.012 请求各位帮忙 |