The Data in the Following Table Represent Heights of Students

question 159

Multiple Choice

The data in the following table represent heights of students at a highschool. Find the value of the missing entry. $\begin{array}{c|c}\begin{array}{c}\text { Height } \\\text { (centimeters) }\end{array} & \begin{array}{l}\text { Relative } \\\text { frequency }\end{array} \\\hline \text { 142-under 152 } & 0.03 \\\text { 152-under 162 } & 0.21 \\\text { 162-under 172 } & 0.27 \\172 \text {-under 182 } & 0.28 \\182 \text {-under 192 } & \\192 \text {-under 202 } & 0.02\end{array}$

• A)\(19 \%\)
• B) \(0.19\)
• C) \(0.21\)
• D) The value cannot be determined from the given data.

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Definitions:

Electro-magnetism

A fundamental branch of physics concerned with the electromagnetic force that occurs between electrically charged particles.

Conductor

A material or object that allows the flow of electrical current in one or more directions.

Magnetic Flux Density

Magnetic flux density is a measure of the strength and direction of a magnetic field at a particular point, expressed in teslas (T), indicating how dense the field lines are in that area.

Induced Voltage

A voltage generated in a conductor due to its motion in a magnetic field or due to a changing magnetic field around it.