Statistical estimates bias for data with missing values: Nonresponse study: انحياز التقديرات الإحصائية للبيانات التي تحوي قيماً مفقودة: دراسة حالة عدم الاستجابة

Statistical surveys are usually conducted to obtain data describing a problem in studied society, and many experience rise nonresponse rates, as the rate of may affect bias survey estimates. Recent empirical results show instances correlation with bias, we attempt translate statistical experiences newly published studies research into causal models that lead assumptions about when lack response causes Research estimates this often exists. The logical question is: what is advantage if they suffer from high rates nonresponse, since post-survey adjustments for require additional variables, answer depends on nature design quality variables.