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.
In unobtrusive data collection, subjects are not aware of the fact that they are being studied and therefore your research does not affect their response or behaviour. The three main types of unobtrusive data are indirect measures, content analysis and secondary analysis of data.n unobtrusive data collection, subjects are not aware of the fact that they are being studied and therefore your research does not affect their response or behaviour. The three main types of unobtrusive data are indirect measures, content analysis and secondary analysis of data.