|Class 10 Maths Statistics||Mode of Grouped Data|
Mode of Grouped Data
Mode is that value among the observations which occurs most often, that is, the value of the observation having the maximum frequency.
In a grouped frequency distribution, it is not possible to determine the mode by looking at the frequencies. Here, we can only locate a class with the maximum frequency, called the modal class.
E.g. Looking at data below, we can say that maximum occurrence occur at class 60-80, frequency 61. But we can’t tell the most frequent data (mode).
We can use this formula to find the mode for Grouped data. In the example above modal class is 60-80.
For the example above, modal class is 60-80 with frequency 61
Therefore, l=60, h = 80-60 = 20, f1 =61, f0 = 52, f2 = 38
Mode = 60 + (61-52)/(2*61-52-38) *20
Or Mode = 65.625