If a store manager selected a sample of customers and computed the mean income for this sample, he has computed:

A) a parameter
B) a statistic
C) a qualitative value
D) all of these
E) none of these

Mean Income

The average income calculated by dividing the total income of a group by the number of individuals or households in that group.

Statistic

A numerical measure that describes some characteristic of a sample, such as its mean or variance, used for making inferences about a population.