I have datasets (one 1997-2001, another 2020, 2021) with means and standard deviations that I need to compare. Two different dats information (mass and total number). It is expected that I compare the two data sets using statistical analyses.
A t-test was suggested. However I am unsure how to go about this when there are no original data on the individuals themselves for 2001 data set (only have full original data for 2021). I was able to do a manual hypothesis testing using the two means and standard deviations. I cannot think of any statistical analyses to represent an appropriate comparison without the original data from the 2001 data set. I really would appreciate any kind of help or recommendations.