A Data Analyst for a Large Chain of Supermarkets Conducted

question 8

Multiple Choice

A data analyst for a large chain of supermarkets conducted trials testing the influence of the helpfulness of shop floor staff and sales income. She found a significant relationship between the two variables, increased helpfulness of shop floor staff was associated with increased sales income. However, at the same time as the trials were conducted the majority of the supermarkets underwent redesigns of their layouts to make customer flow through the shop floor easier. The data analyst wondered to what extent the new shop floor designs might also have influenced sales income. What sort of analysis should she conduct to explore this further?

• A) Mediation
• B) Moderation
• C) Multi-Level Modelling
• D) Multiple Linear regression

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Definitions:

Resonance Structures

Representations of a molecule showing different configurations of electron pairs, to depict delocalization of electrons within the molecule.

Nitrite Ion

A polyatomic ion with the molecular formula NO2-, derived from nitrous acid.

Methane

A colorless, odorless flammable gas that is the simplest alkane, used as a fuel and in chemical synthesis, with the chemical formula CH4.

Resonance Structures

Different Lewis structures for a molecule that cannot be represented by a single structure but are a hybrid of the possibilities, contributing to the molecule's overall structure.