CONSUMER SURVEY OF HDTV AND MP3 PLAYER OWNERS In a survey of 400 households regarding the ownership of HDTVS and MP3 players, the following data were obtained: 360 households own one or more HDTVS. 170 households own one or more HDTVS and one or more MP3 players. 19 households do not own a HDTV or a MP3 player. How many households own only one or more MP3 players?

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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.