Professor Murphy wants to set up a control cart to monitor the percentage of absenteeism in his introductory statistics course (50 students are registered). Absences per period for the last 15 class sessions are in the table below. Session 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Absent 5 0 2 2 3 8 10 3 5 5 1 2 0 2 3 Calculate the empirical centerline for a p-chart to track absences.
Added by Alba V.
Step 1
To do this, we add up all the absences and divide by the total number of sessions. The total number of absences is: 5 + 0 + 2 + 2 + 3 + 8 + 10 + 3 + 5 + 5 + 1 + 2 + 0 + 2 + 3 = 51 The total number of sessions is 15. Show more…
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