Find the variance of the distribution shown in the figure.
1
\(\frac{{{\text{ }\!\!\Delta\!\!\text{ }}^{2}}}{2}\)
2
\(\frac{{{\text{ }\!\!\Delta\!\!\text{ }}^{2}}}{4}\)
3
\(\frac{{{\text{ }\!\!\Delta\!\!\text{ }}^{2}}}{8}\)
4
\(\frac{{{\text{ }\!\!\Delta\!\!\text{ }}^{2}}}{12}\)