- Researchers at the Massachusetts Institute of Technology (MIT) studied the spectroscopic properties of main-belt steroids having diameters smaller than 10 kilometers. Asteroids were observed with the Hiltner telescope at MIT bservatory; the number N of independent spectral image exposures for each observation was recorded. The data for 40 steroid observations, obtained from Science (April, 9, 1993), are listed here. Number of Independent Spectral Image Exposures for 40 Asteroid Observations

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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.