StatTutor Lesson - Organizing a Statistical Problem

true
Stat Tutor
true
true
You have completed 0 question sequences out of 14.
Video Player is loading.
Current Time 0:00
Duration 0:00
Loaded: 0%
Stream Type LIVE
Remaining Time 0:00
 
1x
    • Chapters
    • descriptions off, selected
    • captions off, selected

      Questions 1-2

      172

      Question 1.

      What is statistical inference?

      A.
      B.
      C.

      Correct. Statistical inference is defined as using data from a sample to draw conclusions about a population.
      Incorrect. Statistical inference is defined as using data from a sample to draw conclusions about a population.
      2
      Try again.

      Question 3

      202

      Question 3.

      True or false: We apply statistical problem solving whenever we make a decision.

      A.
      B.

      Correct. This is a correct statement.
      Incorrect. This is a correct statement.
      2
      Try again.

      Question 4

      215

      Question 4.

      True or false: Deciding what needs to be measured is an important part of stating the research question.

      A.
      B.

      Correct. This is a correct statement.
      Incorrect. This is a correct statement.
      2
      Try again.

      Question 5

      238

      Question 5.

      True or false: Planning how to collect and analyze data before collecting data is a critical part of statistical problem solving.

      A.
      B.

      Correct. This is a correct statement.
      Incorrect. This is a correct statement.
      2
      Try again.

      Question 6

      298

      Question 6.

      True or false: If data are not properly collected, then statistical inference will not be valid.

      A.
      B.

      Correct. This is a correct statement.
      Incorrect. This is a correct statement.
      2
      Try again.

      Question 7

      326

      Question 7.

      True or false: Statistics is only used in the SOLVE step of statistical problem solving.

      A.
      B.

      Correct. Statistics is used in all four steps of statistical problem solving.
      Incorrect. Statistics is used in all four steps of statistical problem solving.
      2
      Try again.

      Question 8

      365

      Question 8.

      True or false: It is not necessary to compute values for statistical inference in the SOLVE step when inference is not being done.

      A.
      B.

      Correct. This is a correct statement.
      Incorrect. This is a correct statement.
      2
      Try again.

      Question 9

      401

      Question 9.

      True or false: Valid conclusions are based solely on the results from the SOLVE step.

      A.
      B.

      Correct. Valid conclusions can only be done if the data are properly collected and if the appropriate analysis procedure has been used.
      Incorrect. Valid conclusions can only be done if the data are properly collected and if the appropriate analysis procedure has been used.
      2
      Try again.

      Questions 10-11

      1140

      Question 10.

      True or false: The results of a study could be biased if data are not properly collected.

      A.
      B.

      Correct.This is a correct statement.
      Incorrect. This is a correct statement.
      2
      Try again.

      Question 12

      1341

      Question 12.

      True or false: Statistical graphics and statistical numerical summaries of data are never misleading.

      A.
      B.

      Correct. Any statistical graph or statistical numerical summary can be manipulated to mislead.
      Incorrect. Any statistical graph or statistical numerical summary can be manipulated to mislead.
      2
      Try again.

      Question 13

      1391

      Question 13.

      True or false: Valid conclusions can be drawn on any data set provided the statistical analysis is done correctly.

      A.
      B.

      Correct. Valid conclusions also require that data are properly collected.
      Incorrect. Valid conclusions also require that data are properly collected.
      2
      Try again.

      Question 14

      1434

      Question 14.

      True or false: Manipulation in steps 3 and 4 of statistical problem solving can only be done deliberately.

      A.
      B.

      Correct. Manipulation can be done either deliberately or innocently.
      Incorrect. Manipulation can be done either deliberately or innocently.
      2
      Try again.

      Question 15

      1515

      Question 15.

      True or false: As long as the statistical analysis has been done correctly, statistical conclusions will be valid.

      A.
      B.

      Correct. Valid conclusions depend on properly collected data, use of appropriate statistical methods and healthy skepticism.
      Incorrect. Valid conclusions depend on properly collected data, use of appropriate statistical methods and healthy skepticism.
      2
      Try again.

      Questions 16-19

      1611

      Question 16.

      True or false: Even if every step of statistical problem solving is performed correctly, conclusions could still have limitations.

      A.
      B.

      Correct. This is a correct statement.
      Incorrect. This is a correct statement.
      2
      Try again.