A university cafeteria sells sandwiches, salads and snacks all day. The manager is looking at the association between types of visitors (students, academic staff, general university workers) to see if there is an association between food choice (sandwiches, salads and snacks) and visitor type, so that he can prepare in advance for influxes of certain visitors. Which of the following would be a problem for performing a Chi-square analysis? Select all that apply.pls explain the answer A Visitors come to the cafeteria at random. B Visitors purchase more than one food. C Not all visitors buy anything. D No students buy salad

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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.