The consumer price index (CPI) is a measure of the relative cost of goods in the a given country for a particular year.The table below shows the CPI for a country for the stated years beginning in 1940. 
Create an appropriate model to re-express the CPI.What re-expression of the CPI does this model involve?
Definitions:
Independent Variable
In research, a variable that is manipulated or changed by the researcher to determine its effect on another variable, called the dependent variable.
Control Group
In experimental research, a group of subjects that does not receive the experimental treatment and is used as a benchmark to measure the effect of the treatment on the experimental group.
Human Participants
Individuals who take part in research studies or experiments, contributing data through their actions, behaviors, or biological samples.
Debrief Participants
A process used in research studies where participants are informed about the study's purpose, procedures, and outcomes after their participation is complete.
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