On a 10-Item Test, Three Students in Professor Hsin's Advanced

question 76

Multiple Choice

On a 10-item test, three students in Professor Hsin's advanced chemistry seminar received scores of 2, 5, and 8, respectively. For this distribution of test scores, the standard deviation is equal to the square root of

• A) 4.
• B) 5.
• C) 6.
• D) 9.

---

Definitions:

Exclusive OR Operator

The Exclusive OR Operator is a binary operator that returns true only when its two operands differ (one is true, the other is false).

Exclusive OR Operator

A logical bitwise operator that returns true only when the inputs differ (one is true, the other is false).

Complement Operator

Refers to a unary operator (~ in C/C++) that inverts all the bits of its operand, effectively computing the bitwise NOT.