Question 1138410
There are six groups
0--.05--0 product
1--.44--,.44
2--.30--.60
3--.17--.51
4--.03--.12
5--.01--.05
Sum is 1.72





.05--.44-.30-.17--.03--.01
0.        1.       2.      3.      4.        5

0.   .44. ,60. .51. .12.  .05=1.72 mean or expected value

.148+.228+.024+.279+.156+.108=0.943 sum of squared deviations * probability

sd is sqrt (0.943)=0.971