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The second type of bias is the selection bias. It occurs when researchers decide who to study (e.g. , through sampling) or who to admit to a study (e.g., through eligibility criteria). The sample studied may not be representative of the population intended to be analyzed.

Bias may result from a variety of sources, but often it arises from issues with the study design or data collection process. Study design issues encompass everything from how participants are sampled to how data are collected, and the presence of (or failure to account for) confounders may also lead to biased estimates. cruel amazons

The last type of bias is called confounding bias. A confounding variable (or confounder) is a variable other than the one of interest that can affect the outcome of a study and that can create a spurious association. A confounder gives the wrong impression of the relationship between the independent and dependent variables. The second type of bias is the selection bias

The myth of the Amazons originated from ancient Greek literature, particularly from the works of Homer and Herodotus. According to these accounts, the Amazons were a nation of women who lived in the distant lands of Scythia, beyond the Black Sea. They were described as skilled warriors, horsemen, and archers, who raided and fought against neighboring tribes and even the great heroes of Greek mythology, such as Hercules and Theseus. The sample studied may not be representative of