You are here: Home Examples Data Example 3
07 - 11 - 2014
 Save \$25 on orders of \$100+, \$50 on orders of \$150+, and save \$100 on orders of \$250+ by entering code AFF2014 at store.elsevier.com!

Example 3

Example for two-factor ANOVA

 Lab N of strain Species CO2 Tea_Tree_Diffusion 1580 1 1 21.01 635 1 2 11.61 1298 1 2 13.83 1295 1 1 20.89 1299 1 1 13.11 1690 1 1 13.39 1307 1 1 17.00 1689 1 1 15.97 1050 1 2 16.80 1496 1 2 11.65 1681 1 2 14.31 801 1 2 16.27 1714 2 1 6.78 626 2 1 9.98 1692 2 1 11.19 1690 2 1 13.56 751 2 1 11.22 1682 2 1 8.91 724 2 2 10.62 723 2 2 14.43 1681 2 2 10.99 799 2 2 13.29 801 2 2 11.45 1576 2 2 11.76 924 3 1 19.52 348 3 1 31.44 244 3 1 26.61 1562 3 1 25.37 378 3 1 22.85 456 3 1 24.42 375 3 2 25.63 288 3 2 23.54 397 3 2 20.07 1211 3 2 22.53 134 3 2 16.96 1678 3 2 24.49

 Example_3_Excel 17 Kb

The table contains values of diameters of inhibition zones around paper disks containing tea tree oil against 3 species of bacteria (marked as '1', '2' and '3', including 12 strains of each species) grown in two types of atmospheric environment (column 'CO2' type '1' and type '2').

For the variable 'Species' value '1' means E. coli, '2'E. faecalis and '3'S. aureus; for the variable 'CO2' value '1' means normal atmosphere and '2' – atmosphere with increased concentration of CO2

This example discussed in Two-factor ANOVA.