StatTutor Lesson - Individuals and variables

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      Questions 1-2

      49

      Question 1.

      In a sewing class a teacher assigned the students to make a skirt. As part of the skirt construction, students were required to insert a zipper. In order to assess the students’ sewing skills, the teacher timed how long it took each student to insert his/her zipper. What is the individual in this study?

      		A.
      		B.
      		C.

      Incorrect. Time is measured on each student, so student is the individual.
      Correct. Time is measured on each student, so student is the individual.
      Incorrect. Try again.
      2

      Questions 3-5

      250

      Question 3.

      What type of variable is eye color?

      		A.
      		B.

      Incorrect. Numbers having value cannot be assigned to “eye color”, so “eye color” is categorical. Further, “average eye color” does not make sense.
      Correct. Numbers having value cannot be assigned to “eye color”, so “eye color” is categorical. Further, “average eye color” does not make sense.
      Incorrect. Try again.
      2

      Questions 6-8

      332

      Question 6.

      In a sewing class a teacher assigned the students to make a skirt. As part of the skirt construction, students were required to insert a zipper. In order to assess the students’ sewing skills, the teacher timed how long it took each student to insert his/her zipper. Who are being studied?

      		A.
      		B.
      		C.

      Incorrect. Since the teacher measured the time it took each student to insert a zipper, students are being studied.
      Correct. Since the teacher measured the time it took each student to insert a zipper, students are being studied.
      Incorrect. Try again.
      2

      Questions 9-10

      489

      Question 9.

      What graphs should be used to display the variable method of transportation to campus?

      		A.
      		B.

      Incorrect. Since the variable “method of transportation to campus” is categorical, a bar graph or pie chart should be used to display these data.
      Correct. Since the variable “method of transportation to campus” is categorical, a bar graph or pie chart should be used to display these data.
      Incorrect. Try again.
      2