The Following Is a Frequency Distribution of Grades of a Sample

question 134

Essay

The following is a frequency distribution of grades of a sample of statistics examinations. $$\begin{array} { l c } \text { Grade } & \text { Frequency } \\50 - 59 & 7 \\60 - 69 & 10 \\70 - 79 & 22 \\80 - 89 & 15 \\90 - 99 & 6\end{array}$$ Compute the following measures:
a.
The mean
b.
The variance
c.
The standard deviation
d.
The coefficient of variation

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Definitions:

Administrative Law

The rules and regulations governing the function and powers of the executive branch of government.

Judicial Review

Power held by the courts to review decisions made by administrative decision makers.

Statement of Claim

A legal document filed in court outlining the plaintiff's claims against the defendant and the basis for those claims.

Writ of Summons

A formal legal document issued by a court that initiates a lawsuit and requires the defendant to respond to the charges.