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Mean and Mode in SQL Server
  • Last Updated : 28 Mar, 2018
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Mean is the average of the given data set calculated by dividing the total sum by the number of values in data set.

Example:

Input:  1, 2, 3, 4, 5 
Output: 3
Explanation: 
sum = 1 + 2 + 3 + 4 + 5 = 15
number of values = 5
mean = 15 / 5 = 3

Query to find mean in the table

SELECT Avg(Column_Name) 
FROM  Table_Name

Example:

Creating Table:



Table Content:

Query to find Mean:

Mode of a data set is the value that appears most frequently in a series of data.

Example:

Input:  1, 2, 2, 3, 4, 4, 4, 5, 5, 6
Output: 4
Explanation:
2 occurs 2 times, 5 occurs 2 times
4 occurs 3 times and rest other 
occurs 1 time
So, 4 occurs most frequently and 
is thus the output.

Query to find mode in the table

SELECT TOP 1 Column_Name
FROM   Table_name
GROUP  BY [Column_Name]
ORDER  BY COUNT(*) DESC

Example:

Creating Table:

Table Content:

Query to find Mode:

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