The number of students absent in a class were recorded every day for 120 days and the information is given in the following frequency table:
Find the mean number of students absent per day.
No. of students
absent (x): 0 1 2 3 4 5 6 7
No. of days (f): 1 4 10 50 34 15 4 2
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Answer:
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Step-by-step explanation:
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1
Mean = 5.2417
Step-by-step explanation:
No. of students absent (x): 0 1 2 3 4 5 6 7
No. of days (f): 1 4 10 50 34 15 4 2
fx: 0 ; 4; 20, 150, 136; 65; 240; 14
Sum of frequency = 120
Sum of fx = 629
Mean = Sum of fx / sum of f
= 629 / 120
= 5.2417
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