2. INTRODUCTION & BASICS
• ANOVA is developed by R.A Fisher.
• It is combination of two words .
• Analysis+variance=Analysis means careful examination & variance means difference
between two or more statistical data.
• Variance is also defined as expectation of squared deviation of a random variable from its
mean i.e s2 or σ2.
• ANOVA technique is used for comparison of more than two
population or population having more than two subgroups we will
use ANOVA technique.
3. • Suppose if we want to compare three sample
means to see whether difference exists between
them or not then representation will be like this.
•