Mode is a number which occur or appears most often or frequently in a set of numbers. It is that value which has the highest frequency. It is denoted by M_{0}.
Individual series
In an individual series, mode can be found in by inspection. If the value occurring maximum number of times, then that is a modal value.
For example, 1,2,14,3,3,5,2,3
Variable  No. of occurence 
1  2 
2  2 
3  3 
4  1 
5  1 
In the above table, a variable value 3 repeats maximum number of times i.e. 3
\(\therefore\) Mode (M_{0}) = 3
Discrete Series
In case of discrete series also, mode can be obtained by inspection only. Mode occurs with maximum frequency . For example,
No. of student  4  5  6  7  8 
Marks  10  20  30  15  25 
Here, maximum frequency os 30. So, corresponding modal size is 6.
First, arrange the numbers from least to greatest. Remember that with negative numbers, larger numbers like 7 (if you ignore the minus sign) are less than smaller numbers.
7  6  6  5  5  5  4  4 
Now count how many times each number appears.
If the mode is 11, which number could g be?
11, 6, 5, g, 6, 11
What is the mode?
3, 3, 3, 1, 1
What is the mode?

The manager of a video shop recorded the number of blank tapes sold per day in 2 weeks (below). Which of the following statements is true?
132, 121, 119, 116, 130, 121, 131, 117, 119, 135, 121, 129, 119, 134
Ten earthquakes were measured using the Richter scale and their magnitudes are listed below. Which of the following statements is true?
7.0, 6.2, 7.7, 8.0, 6.4, 7.2, 5.4, 6.6, 7.5, 5.9
Eleven daily temperatures for Juneau, Alaska are listed below, in degrees Fahrenheit. Which of the following statements is true?
21, 0, +2, 15, 0, +5, 18, +7, 0, 32, +21
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