Final answer:
The AVG function by default assumes the ALL keyword for including all values in an average calculation.
Step-by-step explanation:
By default, the AVG function assumes the ALL keyword, which indicates that all values should be included in the calculation. This is typically used in SQL to compute the average value of a column. For example, when a professor calculates the average exam score for their class using all the available scores, the average is considered a parameter of the entire population.SQL Server AVG () function is an aggregate function that returns the average value of a group. The following illustrates the syntax of the AVG () function: ALL instructs the AVG () function to take all values for calculation. ALL is used by default. DISTINCT instructs the AVG () function to operate only on unique values.