Which of the following variables is measured at the ratio level? Question 2 opti

Question

Which of the following variables is measured at the ratio level?

Question 2 options:

religion

intelligence

self-esteem

number of siblings

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Question 3 (2 points)

A low test-retest correlation would probably not be a concern for a measure of which of the following?

Question 3 options:

mood

intelligence

extroversion

conscientiousness

Question 5 (2 points)

Imagine that a research methods instructor accidentally includes concepts on an exam that he did not
actually cover in the course. This is a problem with which of the following?

Question 5 options:

the exam’s face validity

the exam’s discriminant validity

the exam’s criterion validity

the exam’s content validity

Which of the following is true?

Question 8 options:

Every variable other than the independent and dependent variable is either an extraneous variable or a confounding variable (but not both).

Every confounding variable is also an extraneous variable.

Every extraneous variable is also a confounding variable.

Good experiments eliminate all extraneous variables.

Question 14 (2 points)

Which description of the difference between random sampling/selection and random assignment is most accurate?

Question 14 options:

Random sampling/selection is difficult to do because it's hard to have access to every person in a specified population.

Random assignment is something experimenters do while random sampling/selection is something participants do.

Random assignment is something you can do only with between-subjects designs.

Random sampling/selection is easier to do than random assignment.

religion

intelligence

self-esteem

number of siblings

Explanation / Answer

Q2 )

D. number of siblings Answer

Q3 )

B. intelligence Answer

Q5)

D. the exam’s content validity Answer

Q8)

B. Every confounding variable is also an extraneous variable. Answer

As per chegg Q&A guidelines I have solved first four parts of this problem.

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