Scatter Plot Data

New to this forum and apologies if it seems too basic a question. In using scatter plots the data is seeking a relationship between x and y. With this data can averages be used as the underlying data. For example, if seeking to find out if volume of trouble tickets has an impact on the length of time it takes to close tickets can we look at the average # of tickets by day/week/month and chart it by the avg time it takes to close those tickets also by day/week/month. I realize scatter plots are typically 1:1 relationships however can average data be used to draw correlation?