Answer :
A mean is an arithmetic average of a set of observations. The mean number of visits the students made to the library in the last month is 2.32 visits.
What is Mean?
A mean is an arithmetic average of a set of observations. it is given by the formula,
Mean = (Sum of observations)/Number of observations
For the given frequency table, the sum of the mean and the total number of values can be written as,
Sum = (0×284) + (1×218) + (2×76) + (3×64) + (4×42) + (5×320) = 2330
Total number of values = 284 + 218 + 76 + 64 + 42 + 320 = 1004
The mean for the table can be written as,
Mean = sum/ Total number of values = 2330/1004 = 2.32
Hence, the mean number of visits the students made to the library in the last month is 2.32 visits.
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