This is an orgmode template that I use when making Risk-Adjusted Technical Estimates.

Risk-Adjusted Technical Estimate Template

#+TBLNAME: estimates 
| Task      | Estimate | Confidence | Risk Adjusted | Revisions and Fixes | Testing |     Total |
|-----------+----------+------------+---------------+---------------------+---------+-----------|
| Test Task |        2 |          9 |     2.2222222 |                   1 |       1 | 4.2222222 |
|-----------+----------+------------+---------------+---------------------+---------+-----------|
|           |        2 |          9 |             3 |                   1 |       1 |         5 |
#+TBLFM: @>$3=vmean(@2$3..@II$3)::@>$2=vsum(@2$2..@II$2)::@>$4=ceil(vsum(@2$4..@II$4))::@>$5=ceil(vsum(@2$5..@II$5))::@>$6=ceil(vsum(@2$5..@II$5))::$4=$2+($2*(10-$3)/9)::$5=ceil($4 * remote(factors, @1$2))::$6=ceil($4 * remote(factors, @2$2))::$7=$4+$5+$6

|-------------------------------+-------|
| Average confidence            |     9 |
| Estimated hours               |     2 |
| Risk-Adjusted Estimated Hours |     3 |
| Revisions and Fixes           |     1 |
| Testing                       |     1 |
|-------------------------------+-------|
| Total Hours                   |     5 |
| Total Days                    | 0.625 |
|-------------------------------+-------|
#+TBLFM: @1$2=remote(estimates, @>$3)::@2$2=remote(estimates, @>$2)::@3$2=remote(estimates,@>$4)::@4$2=remote(estimates,@>$5)::@5$2=remote(estimates,@>$6)::@6$2=@3+@4+@5::@7$2=@6/8

#+TBLNAME: factors
|----------------------------+-----|
| Revisions and Fixes Factor | 0.3 |
| Testing Factor             | 0.3 |
|----------------------------+-----|

#+TBLNAME: legend
|----+--------------------------------------------------------------------------------------------------------------------------------------------------------|
|  1 | 	No clue -- don't make decisions on this. We need to talk more.                                                                                 |
|  2 | 	Hardly a clue -- don't make decisions on this. We need to talk more.                                                                           |
|  3 | 	Someone else has done this and I read about it; job not well defined -- don't make decisions on this. We need to talk more.                    |
|  4 | 	Someone else has done this and I think I understand this; job might not be well-defined -- don't make decisions on this. We need to talk more. |
|  5 | 	Done something similar to this before and this relates to that work -- this estimate has a variance of +/- 50 percent of estimate.             |
|  6 | 	I think I understand this fairly well and I understand the goal.                                                                               |
|  7 | 	The average case for programming when the requirements are understood.                                                                         |
|  8 | 	A confident case for programming. It's rare that something unexpected would happen.                                                            |
|  9 | 	I've done this before and it's very similar. If something unexpected comes up, I know how to tackle it.                                        |
| 10 | 	No matter what, I'm only going to work on this for the specified period of time                                                                |
|----+--------------------------------------------------------------------------------------------------------------------------------------------------------|