Tham khảo tài liệu 'product and process comparisons_11', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . Models and calculations for the two-way ANOVA Finally the total number of observations n in the experiment is abr. With the help of these expressions we arrive omitting derivations at Sum of all observations 2 rah ss Intel 5 observation 2 CM SSiA -CM ro n2 SS -B È j -CM ra SS AB g Ả -CM- SS A - SS B SSE SStoM - SS A S B SS AB These expressions are used to calculate the ANOVA table entries for the fixed effects 2-way ANOVA. Two-Way ANOVA Example Data An evaluation of a new coating applied to 3 different materials was conducted at 2 different laboratories. Each laboratory tested 3 samples from each of the treated materials. The results are given in the next table Materials B LABS A 1 2 3 1 2 http div898 handbook prc section4 2 of 3 5 1 2006 10 38 59 AM . Models and calculations for the two-way ANOVA Row and The preliminary part of the analysis yields a table of row and column sums. column __ sums Material B Lab A 1 2 3 Total Aj 1 2 Total By From this table we generate the ANOVA table. ANOVA table NIST SEMATECH HOME Source SS df MS F p-value A 1 0 B 2 .0001 AB 2 .298 Error 12 Total Corr 17 TOOLS AlOS 1 SEARCH Fback NEXT http div898 handbook prc section4 3 of 3 5 1 2006 10 38 59 AM . What are variance components ENGINEERING STATISTICS HANDBOOK hW tools raids lỉEÂtCH BACK Nixf 7. Product and Process Comparisons . Comparisons based on data from more than two processes . What are variance components Fixed and Random Factors and Components of Variance A fixed level of a factor or variable means that the levels in the experiment are the only ones we are interested in Random levels are chosen at random from a large or infinite set of .
