There are 30 students, so we are looking for the group which contains the \((30 + 1) \div 2 = 15\frac{1}{2}th\) value, which lies halfway betwen the 15th and the 16th value. The cumulative frequency ...
The mean is found by adding up all the numbers and dividing by how many numbers there are. To find the mean in this example, the total number of goals must be found and then divided by the number of ...
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