Difference between descriptive and inferential statistics.

Briefly discuss the difference between descriptive and inferential statistics.
Identify all descriptive statistics identified in the article {you do not need to classify them, just identify them by name and value for the total group).
Based on the descriptive statistical tests identified in the article address each of the criteria below:
Identify the statistical test of association/correlation used
Identify whether there was statistical significance (provide the p-value)