Researchers Using the Lost Letter Technique in Various Neighbourhoods in London

question 93

Multiple Choice

Researchers using the lost letter technique in various neighbourhoods in London found that about ______ of the letters were returned in rich neighbourhoods, and 37% in poorest nieghbourhoods.

• A) 50%, 50%
• B) 37%, 87%
• C) 87%, 37%
• D) 37%, 37%
• E) 87%, 87%

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Definitions:

Simple Moving Average

A statistical method used to analyze data points by creating a series of averages of different subsets of the full data set.

Responsiveness

The ability of a company or system to quickly react to changes in demand, customer preferences, or market conditions, often critical for maintaining high levels of customer satisfaction.

Mean Squared Error

A measure of the average squared difference between the estimated values and what is estimated, often used in statistics and machine learning to assess the accuracy of models.

Coefficient of Correlation

A statistical measure that indicates the extent to which two variables fluctuate together. A higher coefficient suggests a stronger relationship.