Arithmetic Mean example (Grouped data)
Let’s
consider the following grouped data:
First,
step is to calculate mid-point (mi) for each interval:
So, the mean
for this grouped data is approximately 41.14.
Median example (Ungrouped data)
Find the median of the following data for marks in Statistics (out of 100). {99, 34, 45, 72, 98, 40, 62, 21} Step 1: Order the values from low to high 21, 34, 40, 45, 62, 72, 98, 99 Here, n (total number of observations) is 8, which is even, so we will use the formula given below: Thus, median marks in Statistics are 53.5.
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