The Syrian hamster has an average life span of two to three years. Although uncommon, these hamsters can sometimes live up to five years. A hamster's life span can be extended to a degree by providing it with a clean environment and fresh food daily. Continue Reading.
and substituting the estimate for gives. which is an unbiased estimator of the variance of the mean in terms of the observed sample variance and known quantities. Note that, if the autocorrelations are identically zero, this expression reduces to the well-known result for the variance of the mean for independent data.
There are four apparent discrepancies. 1  The sample RA doesnât include the actual heading âIntroduction.â But there is a section after the abstract that functions like an introduction (establishing the topic and justifying the research). 2  The sample RA includes two headings that arenât easily matched against the IMRAD descriptors.