Biostatistics tools are used in research mainly because one can’t study the entire study subjects (i.e. population) because of scarcity of resources such as money, time etc. In some the research even though the resources are sufficiently available it may not feasible to conduct the research if the risk of conducting experiments on the subjects is high. When one can’t study the entire population then the he has to go for a part of the population (i.e. sample).
When the researcher studies the sample and draw inference about the population, the inference made from the sample may not be adequately represent the population and it will lead to serious error thus will defeat the purpose of the research.
Biostatistical tools help the researcher to overcome this bias and help him to draw valid conclusion about the population with defined level of confidence. Biostatistics has a role in each phase of the research .We shall start with the planning stage of research
When the researcher studies the sample and draw inference about the population, the inference made from the sample may not be adequately represent the population and it will lead to serious error thus will defeat the purpose of the research.
Biostatistical tools help the researcher to overcome this bias and help him to draw valid conclusion about the population with defined level of confidence. Biostatistics has a role in each phase of the research .We shall start with the planning stage of research