Employers want to know which days of the week employees are absent in a five-day work week. Most employers would like to believe that employees are absent equally during the week. Suppose a random sample of 78 managers were asked on which day of the week they had the highest number of employee absences. The results were distributed as in Table. For the population of employees, do the days for the highest number of absences occur with equal frequencies during a five-day work week? Test at a 0.05% significance level. Day Observed Frequency Monday 12 Tuesday 22 Wednesday 15 Thursday 9 Friday 20 What is the chi-square test-statistic for this data? (Report answer accurate to three decimal places.) χ2= What are the degrees of freedom for this test? d.f. =  What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value =

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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.