Analyzing Findings

Review Questions

Height and weight are positively correlated. This means that as height ________ weight ________.

  1. There is no relationship between height and weight.
  2. Usually, the taller someone is, the thinner they are.
  3. Usually, the shorter someone is, the heavier they are.
  4. As height increases, typically weight increases.

Hint:

D

Which of the following correlation coefficients indicates the strongest relationship between two variables?

  1. -.90
  2. -.50
  3. +.80
  4. +.25

Hint:

A

Which statement best illustrates a negative correlation between the number of hours spent watching TV the week before an exam and the grade on that exam?

  1. Watching too much television leads to poor exam performance.
  2. Smart students watch less television.
  3. Viewing television interferes with a student’s ability to prepare for the upcoming exam.
  4. Students who watch more television perform more poorly on their exams.

Hint:

D

The correlation coefficient indicates the weakest relationship when ________.

  1. it is closest to 0
  2. it is closest to -1
  3. it is positive
  4. it is negative

Hint:

A

________ means that everyone in the population has the same likelihood of being asked to participate in the study.

  1. operationalizing
  2. placebo effect
  3. random assignment
  4. random sampling

Hint:

D

The ________ is controlled by the experimenter, while the ________ represents the information collected and statistically analyzed by the experimenter.

  1. dependent variable; independent variable
  2. independent variable; dependent variable
  3. placebo effect; experimenter bias
  4. experiment bias; placebo effect

Hint:

B

Researchers must ________ important concepts in their studies so others would have a clear understanding of exactly how those concepts were defined.

  1. randomly assign
  2. randomly select
  3. operationalize
  4. generalize

Hint:

C

Sometimes, researchers will administer a(n) ________ to participants in the control group to control for the effects that participant expectation might have on the experiment.

  1. dependent variable
  2. independent variable
  3. statistical analysis
  4. placebo

Hint:

D