Standard Deviation Error, please help!!

Dear Excel Forumer,

I am not sure why my standard deviation formula return 6.22688E-14 when i use formula =stdev(C2:C7). If, say for example, I change A7 to 0.1, it will return an absolute number of 0.040824829. That is my desired outcome. I wish to have col. A correspond to 0, while col. B correspond to 500.1, with stdev outcome an absolution value.

Please help. Thanks so much!!

1 A B C
2 0 500.1 500.1
3 0 500.1 500.1
4 0 500.1 500.1
5 0 500.1 500.1
6 0 500.1 500.1
7 0.1 500.1 500
8 Standard Deviation 0.040824829

Thanks a lot for your help in explaining this.

In fact, A is my first reading, B is my second reading, while C is the difference.

Now I know the reason behind this problem. I will definitely look into the link you have recommended me as well.

Once again, thank you for your time in explaining.

Originally Posted by arlu1201

Based on your last post in this thread, its apparent that you are satisfied with the solution(s) you've received and have solved your question, but you haven't marked your thread as "SOLVED". I will do it for you this time.

In future, to mark your thread as Solved, you can do the following -
Select Thread Tools-> Mark thread as Solved.

Incase your issue is not solved, you can undo it as follows -
Select Thread Tools-> Mark thread as Unsolved.

Also, since you are relatively new to the forum, i would like to inform you that you can thank those who have helped you by clicking the small star icon located in the lower left corner of the post which helped you. This adds to the reputation of the person who has taken the time to help you.

Noted, and thanks for your reminder. I will mark as solved in future post.