The Table Below Shows Hypothetical Per- Minute Cell Phone Charges

question 76

Multiple Choice

The table below shows hypothetical per- minute cell phone charges for "pay- and- talk" service over several years. $$\begin{array} { | l | l | } \hline 2008 & 0.55 \\\hline 2009 & 0.50 \\\hline 2010 & 0.40 \\\hline 2011 & 0.35 \\\hline 2012 & 0.25 \\\hline\end{array}$$ TABLE 2- 2
-Refer to Table 2- 2.Assume that 2008 is used as the base year,with the index number = 100.The value of the index number in 2012 is

• A)45.45
• B)0.45
• C)25.0
• D)2.5
• E)0.25

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Definitions:

Standard Time

The established amount of time it should take to complete a specific task or job under normal working conditions.

Standard Deviation

An indicator of the degree to which a collection of numbers diverges from the average, showing the extent of variability or spread among the values.

Process Mean

The average value of a set of measurements of a process, indicating the central tendency of the process performance.

Max Error

The maximum possible error or deviation from the true value or accepted standard.