which paragraph lows better
The data quality works within the limitations of the graph, as it varies across different counties and regions, which affects the overall validity. Increasing the population results in a decrease in accuracy.
or
The following graph's overall validity is impacted by the data quality's role as it varies throughout different counties and regions, and as population growth causes accuracy to decline.
The following graph's overall validity is impacted by the data quality's role as it varies throughout different counties and regions, and as population growth causes accuracy to decline.
Both paragraphs convey similar information, but the second paragraph flows better and has a clearer structure. Here's the revised version:
"The following graph's overall validity is impacted by the data quality, as it varies across different counties and regions. Additionally, population growth contributes to a decline in accuracy."
This version maintains the original points about data quality and its effect on validity and accuracy, but presents them in a more concise and organized manner.