Determine whether the given description corresponds to an observational study or an experiment. In a study of 402 girls with a particular disease, the subjects were injected with vitamins to determine if the vitamins have an effect on the disease. Does the given description correspond to an observational study or an experiment? A. The given description corresponds to an observational study. B. The given description corresponds to an experiment. C. The given description does not provide enough information to answer this question.

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.