what is the mean weight of the class now?
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Mean = Sum of observation/total no. of observations
48 = Sum/20
Sum of observation = 48 x 20 = 960 kg
Two students are added
Total weight = 960 + 60 + 58 = 1078 kg
Total students = 20 + 2 = 22
Mean = 1078/22 = 49 kg
Mean weight of the class is 49 kg.
48 = Sum/20
Sum of observation = 48 x 20 = 960 kg
Two students are added
Total weight = 960 + 60 + 58 = 1078 kg
Total students = 20 + 2 = 22
Mean = 1078/22 = 49 kg
Mean weight of the class is 49 kg.
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