Two Students Independently Determine the Volume of Water Delivered by a 10.00-ML

question 3

Multiple Choice

Two students independently determine the volume of water delivered by a 10.00-mL pipet. Each student takes 8 measurements, then computes the average volume delivered and the standard deviation. The results are tabulated below.
$$\begin{array} { l l l } & \text { Average } & \text { St. Dev. } \\\hline\text { Student A } & 10.4 \mathrm {~mL} & \pm 0.7 \mathrm {~mL} \\\text { Student B } & 10.00 \mathrm {~mL} & \pm 0.02 \mathrm {~mL}\end{array}$$
Which statement best describes the results?

• A) A: good precision, good accuracy. B: good precision, good accuracy.
• B) A: good precision, poor accuracy. B: poor precision, good accuracy.
• C) A: poor precision, good accuracy. B: good precision, poor accuracy.
• D) A: poor precision, poor accuracy. B: good precision, good accuracy.
• E) A: poor precision, poor accuracy. B: poor precision, poor accuracy.

---

Definitions:

Double-Entry Accounting

An accounting method that involves making two entries for every transaction, to maintain the balance of the accounting equation.

Debits and Credits

Fundamental elements of double-entry bookkeeping, where debits represent increases in assets or expenses and credits signify increases in liabilities, equity, or income.

Transaction

An agreement or exchange between two or more parties that is recorded and has a financial impact on the business.

T-Account

A graphical representation of a ledger account, showing two sides for debits and credits, used in accounting.