Global Engineers Hired the Following Number of Class 1 Engineers

question 65

Short Answer

Global Engineers hired the following number of Class 1 engineers during the first six months of the past year. Assume the data represent 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:

Exponential Smoothing

A forecasting technique that applies decreasing weights to past observations, with the most recent observations receiving the most weight.

Smoothing Constant

A parameter used in exponential smoothing models to weigh the significance of the most recent observation in forecasting.

Time Series

Time Series refers to a sequence of data points collected or recorded at successive times, often at regular intervals.

Exponential Smoothing

A time series forecasting method for univariate data that applies decreasing weights over time.