An Instructor Is Evaluating the Performance of Students on a Test.He

question 27

Multiple Choice

An instructor is evaluating the performance of students on a test.He records the number of points that each student missed and created a frequency distribution.This is provided below:
What is the standard deviation for this population?

• A)11.43
• B)14.14
• C)12.63
• D)13.17
• E)16.90

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Definitions:

Electron Charge

A fundamental property of the electron indicating the amount of negative electrical charge it carries.

Atom Nucleus

The central core of an atom, containing protons and neutrons, around which electrons orbit.

AC Sinewave

Represents alternating current electricity in a waveform that alternates in a sinusoidal manner, typical of household electrical supply.

Ion

An atom with either an excess or a deficiency of electrons in the valence; a negatively or positively charged particle.