Given the following sequence, provide the (unsimplified) sum of the first 20 terms: -2, 3, 8, 13, ... From your formula sheet (if needed): Sequences and Series Arithmetic Sequence nth term: an = a1+ (n-1)d Sum of the first n terms: Sn = (2a1+ (n-1)d] == (a1+ an] %3! Geometric Sequence 1-7" = Sn nth term: gn = ar1 %3D Sum of the first n terms = 1-r

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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.