Tollowing formatio was collected groups. T he variable that was collected was the amount of time they worked on the task. n1 Placebo (Group 1) 24 minutes 8 minutes 60 S2 6.3 minutes n2 Placebo (Group 2) 28 minutes 65 i. What is the test-statistic? (include the appropriate statistic)

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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.