Question

Which of the following is a measure of central tendency?

Standard deviation

Range

Variance

Median

All of the following statements are true of large data sets with negatively skewed distributions except:

The mean is less than the mode.

The mode is less than the median.

The median is less than the mode.

The mean is less than the median.

A data set has a median value of 66, a mean value of 68, and a standard deviation of 18. Which value in the data set is most reasonably understood as an outlier?

42

86

24

68

A psychological test designed to measure creativity is considered a reliable tool based on whether

subjects who attain lower scores are actually less creative.

testing conditions affect the performance of subjects.

it accounts for different concepts of creativity.

the same subjects would score consistently over time.

In a typical controlled experiment designed to test the effects of a new drug, _______ will be administered to the _______ group.

the drug and the placebo; experimental

only the placebo; control

the drug and the placebo; control

only the placebo; experimental

When administered to subjects in an experiment, a placebo is a treatment that

is believed to be free of medical effects.

has different effects on different groups.

is being subjected to rigorous testing.

has unpredictable medical effects.

Which of the following factors would most severely reduce the usefulness of a placebo in a controlled experiment?

It is likely that the treatment being tested is actually no more effective than the placebo.

Some of the test subjects exhibit effects from the placebo similar to those of the treatment being tested.

The test subjects have not been told what effects the tested treatment would have that the placebo lacks.

It is relatively easy for subjects to distinguish the placebo from a potentially effective treatment.

Which of the following measures is most likely to take place at the public discourse stage of a psychological research program?

Unaffiliated psychologists will adopt and carry out similar experiments independently.

Researchers will collect data from random samples of the population in survey polls.

Institutions will recruit candidates to participate in controlled experiments.

Psychologists will identify widespread patterns of relevant behavior among research subjects.

The Tuskegee syphilis study raised serious concerns about ethical research because the researchers

withheld information from test subjects about their condition.

infected test subjects with a dangerous disease.

failed to create randomized control groups for comparison.

distorted the data gathered from observation.

Contemporary standards of informed consent require a psychologist using human subjects in an experiment to disclose the _______ before the experiment commences.

differences between experimental and control groups

specific objectives of the experiment

central hypothesis being tested

details of any risks the subjects will face

Answer 1

1. The correct answer is Option 4. The median is a measure of central tendency.
2. The correct answer is Option 4. The mean being less than the median in such a data set is incorrect.
3. The correct answer is Option 3. In this case, the value 24 can be considered an outlier.
4. The correct answer is Option 4. The test would be considered reliable if the same subjects would score consistently over time.
Please post the other questions separately as we are supposed to answer just one question or four sub parts of a question.