A transportation engineer at OSU conducts a study on bus ridership to the 14th and Monroe bus stop near campus. They collect data from riders by surveying every 10th person who arrives at the bus stop, and end up with a sample of 138 people. For each person surveyed, they collect the following information: OSU student (yes/no) Distance traveled to get to campus (miles) Number of bus rides per week Satisfaction with bus service (very unsatisfied, unsatisfied, neutral, satisfied, very satisfied) What sampling scheme is the engineer using to collect data? Simple random sampling Stratified sampling Systematic sampling Convenience sampling

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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.