Teaching Methods Narrative
Two different workbooks and two distinct teaching machines were to be evaluated on their effectiveness in teaching the concept of multiplication. A Grade 4 class of 24 subjects was randomly assigned to 4 groups, and each group in turn was randomly assigned to a teaching method. A test was given and the number of errors was recorded. This uses the Kruskal-Wallis H test to see if the number of errors differs from one teaching method to another.
-Refer to Teaching Methods Narrative. What experimental design did the statistician use?

Question

Teaching Methods Narrative
Two different workbooks and two distinct teaching machines were to be evaluated on their effectiveness in teaching the concept of multiplication. A Grade 4 class of 24 subjects was randomly assigned to 4 groups, and each group in turn was randomly assigned to a teaching method. A test was given and the number of errors was recorded. This uses the Kruskal-Wallis H test to see if the number of errors differs from one teaching method to another. 
-Refer to Teaching Methods Narrative. What experimental design did the statistician use?

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The Answer of Teaching Methods Narrative
Two different workbooks and two distinct teaching machines were to be evaluated on their effectiveness in teaching the concept of multiplication. A Grade 4 class of 24 subjects was randomly assigned to 4 groups, and each group in turn was randomly assigned to a teaching method. A test was given and the number of errors was recorded. This uses the Kruskal-Wallis H test to see if the number of errors differs from one teaching method to another. 
-Refer to Teaching Methods Narrative. What experimental design did the statistician use?

Teaching Methods Narrative Two Different Workbooks and Two Distinct Teaching Machines Were to Machines