Discussion of beneficiation samples niobium chemical analysis the data fluctuations

In a beneficiation test which samples for chemical analysis testing,we found that the data of the niobium fluctuates,probably due to the samples uneven.By using mathematical statistics,single factor analysis of variance,and checking the calculation of the sample relative error on the sieve analysis,we conclude that the data fluctuation is caused by the sample uneven,which is confirmed by mineral identification of the mine rock.