C. ACTIVITY 1. Use the ANOVA to show if there is significant difference among the sales of the three candidates for promotion. Sales of three candidates for promotion. A B C 12450 16500 12800 12100 13300 16500 11200 11400 18000 15000 12500 11900 13000 14600 28300 15400 14580 12200 11400 11200 19000 15100 15300 19000 15600 18000 55000 CA= CAz = [ B2 = Ec= [ cz = Where: TSS = (CA2 + EB2 + EC2) _ (A+EB+EC)? N SSB _ 24)+(XB)2+(EC)? ([A+[B+ [C) no. of rows SSW = TSS - SSB MSB = SSE df B MSW = SSW dfu Degrees of freedom: F. =- MSB MSW dfB = k - 1= dfw = N - k = dfT = N- 1 =1. Ho: H1: 2. a = 3. SUM OF SQUARES: TSS = MSB = SSB = MSW= SSW= 4. Tabular Value: 5. Computed Value: 6. Decision: 7. Conclusion