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

Question

Quizplus · Accepted Answer

Mediation analysis is a statistical technique that can be used to determine whether the relationship between two variables is mediated by a third variable. In this case, the data analyst could use mediation analysis to determine whether the relationship between the helpfulness of shop floor staff and sales income is mediated by the new shop floor designs.

A Data Analyst for a Large Chain of Supermarkets Conducted