What command can be used to calculate the average of numeric values in a field?

The command that is used to calculate the average of numeric values in a field is the mean function. In Splunk, the mean function computes the arithmetic average of the specified field by summing all the numeric values present in that field and then dividing by the count of those values. This is a vital operation for analyzing numeric data, as it gives a quick overview of the central tendency of the data set.

While "avg(field)" may seem intuitive as it suggests the average, it is not a valid command in Splunk's Search Processing Language (SPL). Additionally, "average(field)" is not recognized in SPL, as the correct terminology is "mean." The "median(field)" function calculates the median value, which is the middle point of a data set when it is ordered from least to greatest, and does not represent the average. Thus, "mean(field)" is the precise command for determining the average in Splunk, making it the correct choice for this question.