Global Engineers Hired the Following Number of Class 1 Engineers

question 57

Essay

Global Engineers hired the following number of Class 1 engineers during the first six months of the past year.(Assume the data represents a sample.)
​ $\begin{array}{ll} & {\text { No. of Class 1 }} \\\text { Month } & \text { Engineers Hired } \\\text { January } & 3 \\\text { February } & 2 \\\text { March } & 4 \\\text { April } & 2 \\\text { May } & 6 \\\text { June } & 0\end{array}$ ​
a.
Determine the mean, the median, the mode, and the range for the above data.
b.
Compute the variance and the standard deviation.
c.
Compute the first and the third quartiles.
d.
Compute the z-scores for the months of May and June.

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Definitions:

Lava Fountain

A volcanic phenomenon in which molten lava is forcefully ejected into the air from a vent or crack in the Earth's surface.

Pyroclastic Flow

A rapid flow of hot gases and volcanic debris that descends along a volcano's slopes when there's a violent eruption.

Lava Dome

A roughly circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano.

Lava Flow

Molten rock that moves over the ground surface during a volcanic eruption.