StatTutor Lesson - Residuals

false
Stat Tutor
true
true
Current Time 0:00
Duration 0:00
Loaded: 0%
Stream Type LIVE
Remaining Time 0:00
 
1x
    • Chapters
    • descriptions off, selected
    • captions off, selected
      You have completed 0 question sequences out of 6.

      Questions 1

      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.

      Feedback: Time is measured on each student, so student is the individual.

      Questions 2-6

      98

      Question 3.

      Visually, what is a residual?

      		A.
      		B.
      		C.
      Correct.
      Incorrect.

      Question 7

      138

      Question 8.

      Fill in the blank: A residual plot is a ____________ of the x-values plotted against the residuals.

      		A.
      		B.
      		C.
      Correct.
      Incorrect.

      Question 8

      204

      Question 9.

      What pattern in a residual plot indicates that conditions are met?

      		A.
      		B.
      		C.
      Correct.
      Incorrect.

      Questions 9-10

      281

      Question 10.

      What is the purpose of a residual plot?

      		A.
      		B.
      Correct.
      Incorrect.

      Questions 11-12

      411

      Question 12.

      True or false: These outliers will not have any effect on the values of slope and y-intercept.

      		A.
      		B.
      These outliers will affect the means and standard deviations of the X’s and the Y’s as well as the correlation coefficient. Thus, they will definitely affect the values of slope and y-intercept.

      Applet

      423