Ad
related to: pooled data
Search results
Results From The WOW.Com Content Network
Unlike meta-analyses, pooled analyses can only be conducted if the included studies used the same study design and statistical models, and if their respective populations were homogeneous. If individual-level data from the included studies is available, the result of a pooled analysis can be considered more reliable.
Pooled variance is an estimate when there is a correlation between pooled data sets or the average of the data sets is not identical. Pooled variation is less precise the more non-zero the correlation or distant the averages between data sets. The variation of data for non-overlapping data sets is:
Panel data analysis has three more-or-less independent approaches: independently pooled panels; random effects models; fixed effects models or first differenced models. The selection between these methods depends upon the objective of the analysis, and the problems concerning the exogeneity of the explanatory variables.
The researchers also pooled together data on nearly 21,000 children from 59 studies that reported average IQ scores. Those data showed that children exposed to higher fluoride levels had lower IQ ...
Cross-sectional data differs from time series data, in which the same small-scale or aggregate entity is observed at various points in time. Another type of data, panel data (or longitudinal data), combines both cross-sectional and time series data aspects and looks at how the subjects (firms, individuals, etc.) change over a time series. Panel ...
The grand mean or pooled mean is the average of the means of several subsamples, as long as the subsamples have the same number of data points. [1] For example, consider several lots, each containing several items. The items from each lot are sampled for a measure of some variable and the means of the measurements from each lot are computed ...
Research from a recent pooled analysis suggests that drinking certain amounts of coffee or tea could decrease the risk of head and neck cancer. ... The data examined over 9,500 cases of head and ...
Data source: Federal Reserve 2022 Survey of Consumer Finances. As shown above, among American households that owned pooled investment funds, the median value was $150,000 in the Federal Reserve's ...