Thread: Find moment estimator

Question :

Find moment estimator of $\displaystyle \theta$ based on a random sample $\displaystyle x_1, x_2,x_3,....,x_n $ of size n from the normal population $\displaystyle N(0,\theta^2)$

YOU should be trying some of these.

answer is $\displaystyle \sqrt{{\sum_{i=1}^n x^2_i\over n}}$