The Following Data Represent the Ages (In Years) of a Sample

question 128

Short Answer

The following data represent the ages (in years) of a sample of 25 employees from a government
department: $$\begin{array} { | l | l | l | l | l | l | l | l | l | l | } \hline 31 & 43 & 56 & 23 & 49 & 42 & 33 & 61 & 44 & 28 \\\hline 48 & 38 & 44 & 35 & 40 & 64 & 52 & 42 & 47 & 39 \\\hline 53 & 27 & 36 & 35 & 20 & & & & & \\\hline\end{array}$$ The frequency distribution for the data, using five class intervals and the value 20 as the lower limit of the first class is given below. $$\begin{array} { c c } \hline \text { Class Limits } & \text { Frequency } \\\hline 20 \text { up to } 30 & 4 \\30 \text { up to } 40 & 7 \\40 \text { up to } 50 & 9 \\50 \text { up to } 60 & 3 \\60 \text { up to } 70 & 2 \\\text { Total } & 25 \\\hline\end{array}$$ Find the mean of the grouped data.

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Definitions:

Carbon Atoms

The core building blocks of organic molecules, consisting of six protons, six neutrons, and six electrons.

Structure

Refers to the arrangement of atoms or molecules in a substance, determining its chemical composition and properties.

Aromatic Hydrocarbons

Compounds that contain one or more benzene rings, noted for their stability and aromaticity.

Molecule

The smallest particle in a chemical element or compound that has the chemical properties of that element or compound, composed of atoms bonded together.