Determine the expected count under the null hypothesis. Is achieving a basic skill level in a subject independent to the location of the school? A random sample of students categorized by the location of school and the number achieving basic skills in three subjects is shown in the table. Subject Location of School Reading Math Science Totals Urban 43 42 38 123 Suburban 63 66 65 194 Totals 106 108 103 317 Under the null hypothesis for a Chi-square test of independence, what would be the expected number of students achieving basic math skills in the urban schools? 54.0 41.9 52.8 41.0

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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.