A Local Shopping Mall Would Like to Better Understand the Effectiveness

question 37

Multiple Choice

A local shopping mall would like to better understand the effectiveness of its security guards in preventing shoplifting.The mall's operation manager uses simple linear regression to develop an equation that predicts the number of daily shoplifting incidents at the mall's stores based on the number of security guards employed. The slope of the regression line is b = -1.2; the intercept of the regression line is a = 14.5.The value of r² here is:

• A)0.52
• B)0.68
• C)0.82
• D)2.15

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Definitions:

Voltmeters

Instruments used to measure electrical potential difference between two points in an electric circuit.

Single Range

This term could refer to devices or instruments that have only one scale or measurement range, limiting their versatility across different measurement values.

Ayrton Shunt

An ammeter shunt that permits multiple range values.

Current Transformer

A transformer used for metering alternating current. Current transformers generally have a standard output current value of 5 A at rated primary current.