Thank you Denham for detailed response and suggestion for choosing correct covariance structure. In agronomic studies, Multi-cuts of perennial fodders or leachates and soil extracts from lysimeter (multiple readings) data, we analyze it as repeated measures. 1. my question is could we analyze plant growth data (for example leaf area index or leaf area duration) as repeated measures. Suppose we have used same plants for multiple measurements. In case no, t then why? 2. Leaf area index (LAI) was measured at 45, 60, 75 and 90 days after sowing from a experiment laid out RCBD with 5 treatments. Could you possibly suggest statistical analysis that a) tells us trend over time b) could you suggest some graphs (e.g simple line graph with lettering)? Thanks kind regards Rizwan
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