Example:
Find the mode of the following set of marks.
Marks 
1 
2 
3 
4 
5 
Frequency 
6 
7 
7 
5 
3 
Solution:
The marks 2 and 3 have the highest frequency. So, the modes are 2 and 3.
The above example also shows that a set of observations may have more than one mode.
If the data is summarized in a frequency table, we use the following formula to find mean:
Example:
The table shows the marks obtained by a group of players in a game. Find the mean of the marks.
Marks 
0 
1 
2 
3 
Frequency 
11 
10 
19 
10 
Solution:
To calculate the mean, we first add the following values to the frequency table:
Marks 
0 
1 
2 
3 

Frequency 
11 
10 
19 
10 
Total = 50 
Marks × Frequency 
0 × 11=0 
1 × 10=10 
2 × 19=38 
3 × 10=30 
Total = 78 
Then, we calculate the mean using the formula
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