Serena is skiing around a circular trail that has a four kilometer radius. If she travels through an angle of 5.5 radians in the counterclockwise direction, how far around the track has she traveled? Round your answer to the nearest tenth of a kilometer.

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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.