(I If Two Sets of Data Are in Different Units

question 142

Multiple Choice

(i. If two sets of data are in different units, we can compare the dispersion by using coefficient of variation. (ii) A sample of the homes currently offered for sale revealed that the mean asking price is $75,900, the median $70,100 and the modal price is $67,200. The standard deviation of the distribution is $5,900. The Pearson's coefficient of skewness is 2.95
(iii) The coefficient of skewness is a measure of relative dispersion.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements, but not (i).
• E) (i), (ii) and (iii) are all false statements.

---

Definitions:

Partial Reinforcement

A conditioning principle where only some of the responses made are followed by reinforcement, leading to more resistant behavior to extinction.

Unpredictable Number

A number whose value cannot be anticipated or determined due to its random or variable nature.

Variable-Ratio Schedule

In operant conditioning, a reinforcement schedule that reinforces a response after an unpredictable number of responses.

Intermittent Reinforcement

A learning process in which a response is rewarded only part of the time, leading to more resilient behaviors.