PSY7864 Week 1 Quiz 1

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User
Course PSY7864
Test [u01q1] Week 1 Quiz 1
Started
Submitted
Due Date
Status Completed
Attempt Score 100 out of 100 points
Time Elapsed 4 minutes
Results Displayed All Answers, Submitted Answers, Feedback, Incorrectly Answered Questions

  • Question 1

    10 out of 10 points

    Correct
    You are interested in exploring the relationship between hours studying and test grades. Which of these statements would be her null hypothesis?
    Selected Answer:
    There is no relation between hours studying and grades on a test.
    Answers:
    Response Feedback:
    Correct.

  • Question 2

    10 out of 10 points

    Correct
    Which of these statements would be your nondirectional alternative hypothesis?
    Selected Answer:
    There is a relation between hours studying and grades on a test.
    Answers:
    Response Feedback:
    Correct.

  • Question 3

    10 out of 10 points

    Correct
    Which of these statements would be your directional hypothesis?
    Selected Answer:
    The more hours one studies, the higher their grades will be.
    Answers:
    Response Feedback:
    Correct.

  • Question 4

    10 out of 10 points

    Correct
    What does it mean when you use a 0.05 level of significance (alpha level) to evaluate statistical results?
    Selected Answer:
    You are ensuring that there is no more than a 5% chance of a Type I error (false positive).
    Answers:
    Response Feedback:
    Correct.

  • Question 5

    10 out of 10 points

    Correct
    True/False. You must know what level of measurement is being used in order to choose the appropriate statistical test to use for her analyses.
    Selected Answer:

    True
    Answers:

    True

    False
    Response Feedback:
    Correct.

  • Question 6

    10 out of 10 points

    Correct
    You ask learners to select their course section number for your survey. For example, (1) 101, (2) 102, (3) 103. What type of variable is course section in this example?
    Selected Answer:
    Nominal
    Answers:
    Response Feedback:
    Correct.

  • Question 7

    10 out of 10 points

    Correct
    If you ask them to state how much money they made last year what type of variable would that be?
    Selected Answer:
    Continuous, ratio
    Answers:
    Response Feedback:
    Correct.

  • Question 8

    10 out of 10 points

    Correct
    The scores on the last test given were 78, 100, 77, 78, 82, 12, 85, 86, 78. Which score would you predict is the outlier?
    Selected Answer:
    12
    Answers:
    Response Feedback:
    Correct.

  • Question 9

    10 out of 10 points

    Correct
    What measure of central tendency is most affected by outliers?
    Selected Answer:
    Mean
    Answers:
    Response Feedback:
    Correct.

  • Question 10

    10 out of 10 points

    Correct
    What number do you need to examine to evaluate variability in scores?
    Selected Answer:
    Standard deviation
    Answers:
    Response Feedback:
    Correct.

 

 OK

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