Final answer:
Cross-sectional analysis does not pertain to changes over time, as it compares entities at a single point in time instead of analyzing data over a period like trend and time series analyses.
Step-by-step explanation:
The analysis technique that does not pertain to changes over time is Cross-sectional analysis. Unlike the other methods mentioned, Cross-sectional analysis examines data at a single point in time or compares different entities at the same point in time. Trend analysis and Time series analysis both analyze data over a period to identify patterns or trends. Meanwhile, Regression analysis can be used to assess the relation between variables over time, though it is not exclusive to temporal data and can also be applied cross-sectionally.