Nke a bụ ụdị nyocha nke nyocha (ihe ngosi), nke a na-akpọkwa regression.  Usoro ndị a na-emepụta nwere ike ịrụ ọrụ dịka ngwá ọrụ statistical dị mfe, na-achọpụta ihe ndị dị site na ịkpa nkata nke kachasị mma n'ofe: kasị elu, elu, ma ọ bụ mmechi ma mepee ọnụahịa. 
Nke a bu udi nyocha nke nyocha (ihe ngosi), nke a na-akpokwa regression.  Usoro ndi a na-emeputa nwere ike iru oru dika ngwa oru statistical di mfe, na-achoputa ihe ndi di site na ikpa nkata nke kachasi mma n'ofe: kasi elu, elu, ma o bu mmechi ma mepee onuahia. 