{"id":270,"date":"2022-06-16T18:13:13","date_gmt":"2022-06-16T18:13:13","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/alphamodule\/?post_type=chapter&p=270"},"modified":"2022-06-16T18:13:13","modified_gmt":"2022-06-16T18:13:13","slug":"sampling-bias-learn-it-3","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/alphamodule\/chapter\/sampling-bias-learn-it-3\/","title":{"raw":"Sampling Bias: Learn It 3","rendered":"Sampling Bias: Learn It 3"},"content":{"raw":"

Identifying Sampling Methods<\/h3>\r\nIn Questions 3\u20137, you'll read a brief description of a study, then identify the sampling method used. See the video below for a demonstration of how to differentiate between the methods in a description of a study.\r\n
\r\n

Video Placement<\/h3>\r\n[worked example: a 3-instructor video that offers examples of the four sampling methods and clues that will help distinguish which is being used.] <\/span>\r\n\r\n<\/div>\r\nLet's summarize key features of each of the four common sampling methods we discussed.\r\n
    \r\n \t
  • Simple random sampling<\/strong>\u00a0assigns a number to every member of the population then uses a random number generator to select a sample.<\/li>\r\n \t
  • Systematic sampling<\/strong>\u00a0assigns a number to every member of the population then choses individuals from the population at regular intervals (e.g. every 4th individual from a randomly selected starting point).<\/li>\r\n \t
  • Stratified sampling<\/strong> divides a population into groups via some criterion then uses simple random selection or systematic selection to collect a sample from each group.<\/li>\r\n \t
  • Convenience sampling<\/strong> selects a sample most accessible to the researcher.<\/li>\r\n<\/ul>\r\nNow you try the questions below. Be sure to check the feedback to assess your understanding.\r\n
    \r\n

    question 3<\/h3>\r\n3) A college instructor wants to know what students think of her teaching methods, so she surveys the 10 students who sit in the front row. What kind of sample is this?\r\n
      \r\n \t
    1. a) Stratified sample<\/li>\r\n \t
    2. b) Simple random sample<\/li>\r\n \t
    3. c) Convenience sample<\/li>\r\n \t
    4. d) Systematic sample<\/li>\r\n<\/ol>\r\n[reveal-answer q=\"586674\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"586674\"]Use the video and summary above to guide you.[\/hidden-answer]\r\n\r\n<\/div>\r\n
      \r\n

      question 4<\/h3>\r\n4) At a high school assembly, you need to sample students to understand their views about the new school uniforms. You decide to group students by grade (9th, 10th, 11th, and 12th) and then sample students within each grade using a random number generator. What kind of sample is this?\r\n
        \r\n \t
      1. a) Stratified sample<\/li>\r\n \t
      2. b) Simple random sample<\/li>\r\n \t
      3. c) Convenience sample<\/li>\r\n \t
      4. d) Systematic sample<\/li>\r\n<\/ol>\r\n[reveal-answer q=\"941561\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"941561\"]Use the video and summary above to guide you.[\/hidden-answer]\r\n\r\n<\/div>\r\n
        \r\n

        question 5<\/h3>\r\n5) A research team wants to determine the GPA of college students at a university. The team samples 20 students at random from each of the following majors: English, Science, Computer Science, Engineering, Math, and Fine Arts. What kind of sample is this?\r\n
          \r\n \t
        1. a) Stratified sample<\/li>\r\n \t
        2. b) Simple random sample<\/li>\r\n \t
        3. c) Convenience sample<\/li>\r\n \t
        4. d) Systematic sample<\/li>\r\n<\/ol>\r\n[reveal-answer q=\"685819\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"685819\"]Use the video and summary above to guide you.[\/hidden-answer]\r\n\r\n<\/div>\r\n
          \r\n

          question 6<\/h3>\r\n6) A company that makes hand sanitizer is interested in understanding the work\/life balance culture of the company from the perspective of the employees. Each employee is assigned a number in the company database from 1 to 1,200. A random number generator is used to select 75 numbers, and the employees with those numbers are asked to take part in a focus group. What kind of sample is this?\r\n
            \r\n \t
          1. a) Stratified sample<\/li>\r\n \t
          2. b) Simple random sample<\/li>\r\n \t
          3. c) Convenience sample<\/li>\r\n \t
          4. d) Systematic sample<\/li>\r\n<\/ol>\r\n[reveal-answer q=\"13029\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"13029\"]Use the video and summary above to guide you.[\/hidden-answer]\r\n\r\n<\/div>\r\n
            \r\n

            question 7<\/h3>\r\n7) The same hand sanitizer company is interested in conducting focus groups of employees to better understand the work\/life balance culture of the company. They decided to create a list in alphabetical order of all their employees by their last name. Then, they select a sample of employees by selecting every 8th person on the list for the sample. What kind of sample is this?\r\n
              \r\n \t
            1. a) Stratified sample<\/li>\r\n \t
            2. b) Simple random sample<\/li>\r\n \t
            3. c) Convenience sample<\/li>\r\n \t
            4. d) Systematic sample<\/li>\r\n<\/ol>\r\n[reveal-answer q=\"155174\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"155174\"]Use the video and summary above to guide you.[\/hidden-answer]\r\n\r\n<\/div>","rendered":"

              Identifying Sampling Methods<\/h3>\n

              In Questions 3\u20137, you’ll read a brief description of a study, then identify the sampling method used. See the video below for a demonstration of how to differentiate between the methods in a description of a study.<\/p>\n

              \n

              Video Placement<\/h3>\n

              [worked example: a 3-instructor video that offers examples of the four sampling methods and clues that will help distinguish which is being used.] <\/span><\/p>\n<\/div>\n

              Let’s summarize key features of each of the four common sampling methods we discussed.<\/p>\n

                \n
              • Simple random sampling<\/strong>\u00a0assigns a number to every member of the population then uses a random number generator to select a sample.<\/li>\n
              • Systematic sampling<\/strong>\u00a0assigns a number to every member of the population then choses individuals from the population at regular intervals (e.g. every 4th individual from a randomly selected starting point).<\/li>\n
              • Stratified sampling<\/strong> divides a population into groups via some criterion then uses simple random selection or systematic selection to collect a sample from each group.<\/li>\n
              • Convenience sampling<\/strong> selects a sample most accessible to the researcher.<\/li>\n<\/ul>\n

                Now you try the questions below. Be sure to check the feedback to assess your understanding.<\/p>\n

                \n

                question 3<\/h3>\n

                3) A college instructor wants to know what students think of her teaching methods, so she surveys the 10 students who sit in the front row. What kind of sample is this?<\/p>\n

                  \n
                1. a) Stratified sample<\/li>\n
                2. b) Simple random sample<\/li>\n
                3. c) Convenience sample<\/li>\n
                4. d) Systematic sample<\/li>\n<\/ol>\n
                  Hint<\/span><\/p>\n
                  Use the video and summary above to guide you.<\/div>\n<\/div>\n<\/div>\n
                  \n

                  question 4<\/h3>\n

                  4) At a high school assembly, you need to sample students to understand their views about the new school uniforms. You decide to group students by grade (9th, 10th, 11th, and 12th) and then sample students within each grade using a random number generator. What kind of sample is this?<\/p>\n

                    \n
                  1. a) Stratified sample<\/li>\n
                  2. b) Simple random sample<\/li>\n
                  3. c) Convenience sample<\/li>\n
                  4. d) Systematic sample<\/li>\n<\/ol>\n
                    Hint<\/span><\/p>\n
                    Use the video and summary above to guide you.<\/div>\n<\/div>\n<\/div>\n
                    \n

                    question 5<\/h3>\n

                    5) A research team wants to determine the GPA of college students at a university. The team samples 20 students at random from each of the following majors: English, Science, Computer Science, Engineering, Math, and Fine Arts. What kind of sample is this?<\/p>\n

                      \n
                    1. a) Stratified sample<\/li>\n
                    2. b) Simple random sample<\/li>\n
                    3. c) Convenience sample<\/li>\n
                    4. d) Systematic sample<\/li>\n<\/ol>\n
                      Hint<\/span><\/p>\n
                      Use the video and summary above to guide you.<\/div>\n<\/div>\n<\/div>\n
                      \n

                      question 6<\/h3>\n

                      6) A company that makes hand sanitizer is interested in understanding the work\/life balance culture of the company from the perspective of the employees. Each employee is assigned a number in the company database from 1 to 1,200. A random number generator is used to select 75 numbers, and the employees with those numbers are asked to take part in a focus group. What kind of sample is this?<\/p>\n

                        \n
                      1. a) Stratified sample<\/li>\n
                      2. b) Simple random sample<\/li>\n
                      3. c) Convenience sample<\/li>\n
                      4. d) Systematic sample<\/li>\n<\/ol>\n
                        Hint<\/span><\/p>\n
                        Use the video and summary above to guide you.<\/div>\n<\/div>\n<\/div>\n
                        \n

                        question 7<\/h3>\n

                        7) The same hand sanitizer company is interested in conducting focus groups of employees to better understand the work\/life balance culture of the company. They decided to create a list in alphabetical order of all their employees by their last name. Then, they select a sample of employees by selecting every 8th person on the list for the sample. What kind of sample is this?<\/p>\n

                          \n
                        1. a) Stratified sample<\/li>\n
                        2. b) Simple random sample<\/li>\n
                        3. c) Convenience sample<\/li>\n
                        4. d) Systematic sample<\/li>\n<\/ol>\n
                          Hint<\/span><\/p>\n
                          Use the video and summary above to guide you.<\/div>\n<\/div>\n<\/div>\n","protected":false},"author":17533,"menu_order":12,"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-270","chapter","type-chapter","status-publish","hentry"],"part":158,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/chapters\/270","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\/270\/revisions"}],"predecessor-version":[{"id":280,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/chapters\/270\/revisions\/280"}],"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\/270\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/wp\/v2\/media?parent=270"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/pressbooks\/v2\/chapter-type?post=270"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/wp\/v2\/contributor?post=270"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/alphamodule\/wp-json\/wp\/v2\/license?post=270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}