Use the Following Information for Questions
Transactions for the Month

question 18

Multiple Choice

Use the following information for questions
Transactions for the month of June were: $$\begin{array} { r r r r r r } { \text { Purchases } } && { \text { Sales } } \\\hline \text { June } 1 & \text { (balance) } 800 @ \$ 3.20 & \text { June } 2 & 600 @ \$ 5.50 \\3 & 2,200 @ 3.10 & 6 & 1,600 @ 5.50 \\7 & 1,200 @ 3.30 & 9 & 1,000 @ 5.50 \\15 & 1,800 @ 3.40 & 10 & 400 @ 6.00 \\22 & 500 @ 3.50 & 18 & 1,400 @ 6.00 \\& & 25 & 200 @ 6.00\end{array}$$
-Assuming that perpetual inventory records are kept in units only, the ending inventory on a LIFO basis is

---

Definitions:

Variable Interval

A schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed, used in behavioral psychology studies.

Schedule of Reinforcement

In behavior analysis, the strategy used in reinforcing behavior, which includes various methodologies like fixed-ratio, variable-ratio, fixed-interval, and variable-interval schedules.

Fixed Ratio

A schedule of reinforcement where a response is reinforced only after a specified number of responses, commonly used in behavior modification.

Employee Volunteerism

The act of employees volunteering their time and skills for community service projects or charitable causes, often supported or encouraged by their employer.