I am trying to do an analysis on how to select a data set statistically which has less peaks and valleys or less erratic pattern. Can someone suggest is there any statistical tool that can help me on this.
This is a very interesting problem, but you need to be more precise in what you mean by peaks and valleys. It would also help if you could say more about what your data are.
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.