**Assumptions of ANOVA**

1.
Observations and errors are
independently distribbuted.

2.
Observations and errors conferm to
normal distribution with equal variance.

3.
Treatments and environmental effects
are additive

**Objective of ANOVA**

1.
It identifies the couses of
variation and sort out corresponding components of variation with associated degrees of freedom.

2.
It provides test of significance
based on F-distribution.