Washing clothes A consumer group wants to test theeffectiveness of a new “organic” laundry detergent and make recommendations to customers about how to bestuse the product. They intentionally get grass stains on 30white T-shirts in order to see how well the detergent willclean them. They want to try the detergent in cold waterand in hot water on both the “regular” and “delicates” wash cycles. Design an appropriate experiment, indicat-ing the number of factors, levels, and treatments. Explain the role of randomization in your experiment.

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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.