{"id":320,"date":"2022-06-17T15:31:02","date_gmt":"2022-06-17T15:31:02","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/alphamodule\/?post_type=chapter&p=320"},"modified":"2022-06-17T15:31:10","modified_gmt":"2022-06-17T15:31:10","slug":"advanced-experimental-design-apply-it-3","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/alphamodule\/chapter\/advanced-experimental-design-apply-it-3\/","title":{"raw":"Advanced Experimental Design: Apply It 3","rendered":"Advanced Experimental Design: Apply It 3"},"content":{"raw":"Continue to use this scenario first given in Question 3 to answer Questions 4 - 6.\r\n\r\nA school psychologist wants to test the effectiveness of a new method for teaching reading. She recruits 80 first-grade students in District Code 75104 and randomly divides them into two groups. Group 1 is taught by means of the new method, while Group 2 is taught by the traditional method. The same teacher is assigned to teach both groups. At the end of the year, an achievement test is administered and the results are compared.<\/em>\r\n
\r\n

question 4<\/h3>\r\nWhat are some advantages of using the completely randomized block design for the education researcher in the scenario given in Question 3?\r\n\r\n[reveal-answer q=\"92890\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"92890\"]Consider the advantages of blocking and of random assignment.[\/hidden-answer]\r\n\r\n<\/div>\r\n
\r\n

question 5<\/h3>\r\nAgain, referring to the scenario given in Question 3, would you consider this experiment to be well-designed?\r\n\r\n[reveal-answer q=\"40348\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"40348\"]Does it include the key features of experimental design?[\/hidden-answer]\r\n\r\n<\/div>\r\n
\r\n

question 6<\/h3>\r\nWould you trust the results from the conclusions of this experiment or would you be skeptical?\r\n\r\n[reveal-answer q=\"229406\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"229406\"]We can trust the results of a well-designed experiment.[\/hidden-answer]\r\n\r\n<\/div>\r\n
\r\n

Guidance<\/h3>\r\n[Wrap-up: The key components of a well-designed experiment include treatment, factor of interest (also known as the explanatory variable or independent variable), response variable (also known as the dependent variable), nuisance factors, random assignment, and replication. <\/span>\r\n\r\nThe completely randomized block design is an additional method we can use to control for a known difference that affects the response factor. <\/span>\r\n\r\nThe basic principles of a completely randomized block design are blocking and randomization.<\/span>\r\n\r\nBlocking helps to minimize the effects of nuisance factors. Randomization is used to assign subjects within the blocks to the treatment groups,\u00a0which helps ensure that the groups have similar distributions of factors other than the factor of interest.<\/span>\r\n\r\nWe can trust the conclusions of a well-designed experiment. The results of a well-designed and implemented study are meaningful. ]<\/span>\r\n\r\n<\/div>\r\n ","rendered":"

Continue to use this scenario first given in Question 3 to answer Questions 4 – 6.<\/p>\n

A school psychologist wants to test the effectiveness of a new method for teaching reading. She recruits 80 first-grade students in District Code 75104 and randomly divides them into two groups. Group 1 is taught by means of the new method, while Group 2 is taught by the traditional method. The same teacher is assigned to teach both groups. At the end of the year, an achievement test is administered and the results are compared.<\/em><\/p>\n

\n

question 4<\/h3>\n

What are some advantages of using the completely randomized block design for the education researcher in the scenario given in Question 3?<\/p>\n

Hint<\/span><\/p>\n
Consider the advantages of blocking and of random assignment.<\/div>\n<\/div>\n<\/div>\n
\n

question 5<\/h3>\n

Again, referring to the scenario given in Question 3, would you consider this experiment to be well-designed?<\/p>\n

Hint<\/span><\/p>\n
Does it include the key features of experimental design?<\/div>\n<\/div>\n<\/div>\n
\n

question 6<\/h3>\n

Would you trust the results from the conclusions of this experiment or would you be skeptical?<\/p>\n

Hint<\/span><\/p>\n
We can trust the results of a well-designed experiment.<\/div>\n<\/div>\n<\/div>\n
\n

Guidance<\/h3>\n

[Wrap-up: The key components of a well-designed experiment include treatment, factor of interest (also known as the explanatory variable or independent variable), response variable (also known as the dependent variable), nuisance factors, random assignment, and replication. <\/span><\/p>\n

The completely randomized block design is an additional method we can use to control for a known difference that affects the response factor. <\/span><\/p>\n

The basic principles of a completely randomized block design are blocking and randomization.<\/span><\/p>\n

Blocking helps to minimize the effects of nuisance factors. Randomization is used to assign subjects within the blocks to the treatment groups,\u00a0which helps ensure that the groups have similar distributions of factors other than the factor of interest.<\/span><\/p>\n

We can trust the conclusions of a well-designed experiment. The results of a well-designed and implemented study are meaningful. ]<\/span><\/p>\n<\/div>\n

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