Qualitative observation in science is when a researcher subjectively gathers information that focuses more on the differences in quality than the differences in quantity, which usually involves fewer participants. Qualitative observation is more interested in bringing out and knowing all of the intimate details about each participant and is conducted on a more personal level so that the researcher can get the participants to confide in the researcher.Continue Reading
When participants feel comfortable with the researcher and confide in him or her, the researcher is able to get the information that he or she needs to make concrete observations. Most qualitative observational studies take place in a natural setting such as a public place and ask that participants answer questions in their own words. Qualitative observations and studies are usually done by social scientists, psychologists and sociologists with the goal of better understanding human and animal behavior.
Quantitative observation, on the other hand, is an objective gathering of information. It focuses on things such as statistics, numeric analysis and measurements. Quantitative observation typically measures things, such as shapes, sizes, color, volume and numbers looking for the differences between the test subjects. It is the most commonly used observational method except for the social sciences where qualitative observation is the most commonly used observation method.Learn more about Chem Lab
Experimental research design is the process of planning an experiment that is intended to test a researcher's hypothesis. The research design process is carried out in many different types of research, including experimental research.Full Answer >
The dependent variable is the measurable factor that changes due to the effect of another variable in an experiment or series of measurements. It has a relationship with the independent variable, which can be positive or negative. This means that the dependent variable changes in either the same direction or the opposite direction as the independent variable changes.Full Answer >
In microscopy, the depth of field refers to the range of distance that runs parallel to the optical axis where the specimen can move and still be viewed without negatively affecting the clarity of the object under observation. The depth of field determines the vertical extent of the plane of focus, which is typically measured in microns.Full Answer >
Errors in the chemistry lab can arise from human error, equipment limitations and observation errors. Some other sources of errors include measurement values that are not well defined and inconsistent experiment techniques.Full Answer >