Respuesta :
Based on this information, Stefania is using a longitudinal design and she is making autocorrelations.
What is an autocorrelation?
It is a term whose definition tries to explain the relationship that exists in the memory of the series observed through time.
This type of correlation or association between two variables specifically evaluates the trend in the data or dependence on itself over time.
Therefore, we can conclude that based on this information, Stefania is using a longitudinal design and she is making autocorrelations.
Learn more about autocorrelations here: https://brainly.com/question/14514479