• Equivalence partitioning is a software technique that involves identifying a small set of representative input values that produce as much different output condition as possible. It is use to reduce test cases. This reduces the number of permutation & combination of input, output values used for testing, thereby increasing the coverage and reducing the effort involved in testing.

• The set of input values that generate one single expected output is called a partition. When the behavior of the software is the same for a set of values, then the set is termed as equivalence class or partition.

• Example:

1.An insurance company that has the following premium rates based on the age group. A life insurance company has base premium of \$ 0.50 for all ages. Based on the age group, an additional monthly premium has to pay that is as listed in the table below. For example , a person aged 34 has to pay a premium=\$0.50 +\$ 1.65=$2.15

2.Based on the equivalence portioning technique, the equivalence partitions that are based on marks are given below:

Equivalence partitioning: