Use the Given Set of Points to Compute the Sum $\sum ( x - \bar { x } ) ^ { 2 }$

question 20

Multiple Choice

Use the given set of points to compute the sum of squares for x , $\sum ( x - \bar { x } ) ^ { 2 }$
$\begin{array} { c | l l l l l l l } x & 13 & 13 & 20 & 16 & 12 & 20 \\\hline y & 55 & 59 & 89 & 72 & 56 & 85\end{array} \quad x = 17$

• A) 65.333333
• B) 15.666667
• C) 2.475389
• D) 4.112245

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Definitions:

Bar Codes

A method of representing data in a visual, machine-readable form, consisting of bars and spaces, used to track and identify products.

RFID

Radio-Frequency Identification, a technology using wireless non-contact use of radio waves to transfer data for the purposes of automatically identifying and tracking tags attached to objects.

Two-Dimensional Code

A matrix barcode that stores information both horizontally and vertically, such as a QR code.

Active RFID Codes

Radio-frequency identification tags that have their own power source, allowing them to transmit data over longer distances than passive RFID tags.