{"id":292,"date":"2022-06-16T19:59:04","date_gmt":"2022-06-16T19:59:04","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/alphamodule\/?post_type=chapter&p=292"},"modified":"2022-06-16T19:59:04","modified_gmt":"2022-06-16T19:59:04","slug":"experimental-design-apply-it-2","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/alphamodule\/chapter\/experimental-design-apply-it-2\/","title":{"raw":"Experimental Design: Apply It 2","rendered":"Experimental Design: Apply It 2"},"content":{"raw":"Use this Experimental Design Worksheet as desired to answer Questions 2 - 4. [link to the worksheet that appears in the DC instructor page for in-class 2C]\r\n
\r\n

Question 2<\/h3>\r\nWrite a research question about coral bleaching that can be answered using experimental design. You may consider the causes of bleaching, ways to prevent bleaching, or ways to reverse bleaching.\r\n\r\n[reveal-answer q=\"669608\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"669608\"]Remember that experimental design seeks to identify cause and effect. For example, you may ask \"does [something] cause bleaching?\" or \"does [something] prevent bleaching?\" [\/hidden-answer]\r\n\r\n<\/div>\r\nNow that you have your research question you can design an experiment to answer it.\r\n
\r\n

Question 3<\/h3>\r\nDesign an experiment to answer your research question.\r\n\r\n \r\n\r\nPart A: Identify the factors in your experiment.\r\n\r\nFactor of interest:\r\n\r\nResponse factor:\r\n\r\n[reveal-answer q=\"226932\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"226932\"]These will be dependent upon the question you wrote. Which factor is the one suspected of causing an effect? [\/hidden-answer]\r\n\r\n \r\n\r\nPart B: Describe the set-up and procedure for your experiment. How will you change your factor of interest to create your experimental group? How will it be different in the control group? What other factors will need to be the same in both the experimental and control groups? How will you measure your response variable at the end of the experiment?\r\n\r\n[reveal-answer q=\"277255\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"277255\"]The control group should have the factor of interest set to \"normal\" or \"baseline,\" while the experimental group should have the factor of interest set to some plausible experimental level.[\/hidden-answer]\r\n\r\n \r\n\r\nPart C: What measures will you take to ensure your results show the effects of your treatment and not other hidden causes?\r\n\r\n[reveal-answer q=\"509413\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"509413\"]Recall the key mechanisms of experimental design given at the top of this page, including random assignment (not random sampling). How will you keep nuisance factors the same across the treatment groups? [\/hidden-answer]\r\n\r\n<\/div>\r\nFollow your instructor's guidance to answer Question 4.\r\n
\r\n

question 4<\/h3>\r\nPrepare a summary of your proposed experiment to share with your classmates. Be sure to justify your choices regarding experimental design. Your instructor may request a certain format.\r\n\r\n[reveal-answer q=\"23372\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"23372\"]Follow your instructor's guidance to create this summary.[\/hidden-answer]\r\n\r\n<\/div>\r\n
\r\n

Guidance<\/h3>\r\n[Wrap-Up: \" Experimental\u00a0design is useful in situations where the factor of\u00a0interest can be manipulated by the researcher. Not all situations are\u00a0like that though. Can you think of an example where a researcher\u00a0might not be able to manipulate the factor of interest?\u201d<\/span>\r\n\r\nExamples: <\/span>\r\n
    \r\n \t
  • Does educational level affect income? (Can\u2019t\u00a0manipulate\/randomly assign an education) <\/span><\/li>\r\n \t
  • Do men or women have a higher risk of developing heart\u00a0disease? (Can\u2019t manipulate\/assign sex)<\/span><\/li>\r\n \t
  • Does smoking cause lung cancer? (Not ethical to randomly\u00a0assign people to smoke) <\/span><\/li>\r\n<\/ul>\r\nIn the next activity, you will learn about observational studies\u00a0through the context of vaccination.\"]<\/span>\r\n\r\n<\/div>","rendered":"

    Use this Experimental Design Worksheet as desired to answer Questions 2 – 4. [link to the worksheet that appears in the DC instructor page for in-class 2C]<\/p>\n

    \n

    Question 2<\/h3>\n

    Write a research question about coral bleaching that can be answered using experimental design. You may consider the causes of bleaching, ways to prevent bleaching, or ways to reverse bleaching.<\/p>\n

    Hint<\/span><\/p>\n
    Remember that experimental design seeks to identify cause and effect. For example, you may ask “does [something] cause bleaching?” or “does [something] prevent bleaching?” <\/div>\n<\/div>\n<\/div>\n

    Now that you have your research question you can design an experiment to answer it.<\/p>\n

    \n

    Question 3<\/h3>\n

    Design an experiment to answer your research question.<\/p>\n

     <\/p>\n

    Part A: Identify the factors in your experiment.<\/p>\n

    Factor of interest:<\/p>\n

    Response factor:<\/p>\n

    Hint<\/span><\/p>\n
    These will be dependent upon the question you wrote. Which factor is the one suspected of causing an effect? <\/div>\n<\/div>\n

     <\/p>\n

    Part B: Describe the set-up and procedure for your experiment. How will you change your factor of interest to create your experimental group? How will it be different in the control group? What other factors will need to be the same in both the experimental and control groups? How will you measure your response variable at the end of the experiment?<\/p>\n

    Hint<\/span><\/p>\n
    The control group should have the factor of interest set to “normal” or “baseline,” while the experimental group should have the factor of interest set to some plausible experimental level.<\/div>\n<\/div>\n

     <\/p>\n

    Part C: What measures will you take to ensure your results show the effects of your treatment and not other hidden causes?<\/p>\n

    Hint<\/span><\/p>\n
    Recall the key mechanisms of experimental design given at the top of this page, including random assignment (not random sampling). How will you keep nuisance factors the same across the treatment groups? <\/div>\n<\/div>\n<\/div>\n

    Follow your instructor’s guidance to answer Question 4.<\/p>\n

    \n

    question 4<\/h3>\n

    Prepare a summary of your proposed experiment to share with your classmates. Be sure to justify your choices regarding experimental design. Your instructor may request a certain format.<\/p>\n

    Hint<\/span><\/p>\n
    Follow your instructor’s guidance to create this summary.<\/div>\n<\/div>\n<\/div>\n
    \n

    Guidance<\/h3>\n

    [Wrap-Up: ” Experimental\u00a0design is useful in situations where the factor of\u00a0interest can be manipulated by the researcher. Not all situations are\u00a0like that though. Can you think of an example where a researcher\u00a0might not be able to manipulate the factor of interest?\u201d<\/span><\/p>\n

    Examples: <\/span><\/p>\n

      \n
    • Does educational level affect income? (Can\u2019t\u00a0manipulate\/randomly assign an education) <\/span><\/li>\n
    • Do men or women have a higher risk of developing heart\u00a0disease? (Can\u2019t manipulate\/assign sex)<\/span><\/li>\n
    • Does smoking cause lung cancer? (Not ethical to randomly\u00a0assign people to smoke) <\/span><\/li>\n<\/ul>\n

      In the next activity, you will learn about observational studies\u00a0through the context of vaccination.”]<\/span><\/p>\n<\/div>\n","protected":false},"author":17533,"menu_order":22,"template":"","meta":{"_candela_citation":"[]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-292","chapter","type-chapter","status-publish","hentry"],"part":158,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/chapters\/292","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/wp\/v2\/users\/17533"}],"version-history":[{"count":1,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/chapters\/292\/revisions"}],"predecessor-version":[{"id":300,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/chapters\/292\/revisions\/300"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/parts\/158"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/chapters\/292\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/wp\/v2\/media?parent=292"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/chapter-type?post=292"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/wp\/v2\/contributor?post=292"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/wp\/v2\/license?post=292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}