Subject: learning curve (aka Git User's Survey 2009 partial summary, part 2 - from first 10)

From: Nicolas Sebrecht <[email-masked]>
Date: Tue, 18 Aug 2009 21:55:50 +0200

The 18/08/09, Jakub Narebski wrote:

> > I believe it would be interesting to know who (from the question 6.)
> > think what later. We may expect that people of the grade 4 and 5 ("can
> > offer advice" and "know it very well") underestimate the difficulty to
> > learn Git.
> 
> Well, you can do some analysis yourself, using just created filters at
> http://www.survs.com/shareResults?survey=2PIMZGU0&rndm=678J66QRA2

Thank you very much.

> For example:
> 
> ================================================|
>                   |    proficiency with Git     |
> To learn          |-----------------------------|
>                   | any*[%] | 1-3 [%] | 4-5 [%] |
> ------------------------------------------------|
> Very easy         |     4%  |     3%  |     5%  |
> Easy              |    20%  |    19%  |    22%  |
> Reasonably easy   |    55%  |    55%  |    56%  |
> Hard              |    19%  |    20%  |    16%  |
> Very hard         |     2%  |     3%  |     1%  |
> ------------------------------------------------|
> Total respondents |   3005  |   1786  |   1212  |
> ================================================|

This looks consistent. Here are some more grained summaries based on
your filters:

                      =========================================================
                      |                       TO LEARN (%)                    |
===============================================================================
Proficiency           | very easy | easy | reasonably easy | hard | very hard |
===============================================================================
no filter (any)       |      4    |  20  |       55        |  19  |     2     |
――――――――――――――――――――――|―――――――――――|――――――|―――――――――――――――――|――――――|―――――――――――|
1. novice             |      3    |  12  |       49        |  25  |    11     |
2. casual             |      2    |  17  |       54        |  25  |     3     |
3. everyday use       |      4    |  21  |       56        |  18  |     2     |
4. can offer advice   |      4    |  23  |       56        |  17  |     1     |
5. know it very well  |     11    |  20  |       54        |  14  |     1     |
===============================================================================

                      =========================================================
                      |                       TO USE   (%)                    |
===============================================================================
Proficiency           | very easy | easy | reasonably easy | hard | very hard |
===============================================================================
no filter (any)       |      9    |  37  |        45       |   8  |     1     |
――――――――――――――――――――――|―――――――――――|――――――|―――――――――――――――――|――――――|―――――――――――|
1. novice             |      5    |  17  |        47       |  25  |     7     |
2. casual             |      5    |  27  |        51       |  15  |     2     |
3. everyday use       |      8    |  36  |        47       |   8  |     1     |
4. can offer advice   |     11    |  44  |        40       |   4  |     0     |
5. know it very well  |     22    |  37  |        36       |   5  |     1     |
===============================================================================

What appears here first is that the averages of the third category
("everyday day use") are _very_ near from the averages of the whole users.
This gives a good confidence in the results.

Simplified summary:

                      ===============================================
                      |                  TO LEARN (%)               |
=====================================================================
Proficiency           | (very) easy | reasonably easy | (very) hard |
=====================================================================
no filter (any)       |     24      |        55       |      21     |
――――――――――――――――――――――|―――――――――――――|―――――――――――――――――|―――――――――――――|
1. novice             |     15      |        49       |      36     |
2. casual             |     19      |        54       |      28     |
----------------------|-------------|-----------------|-------------|
3. everyday use       |     25      |        56       |      20     |
----------------------|-------------|-----------------|-------------|
4. can offer advice   |     27      |        56       |      18     |
5. know it very well  |     31      |        54       |      15     |
=====================================================================

                      ===============================================
                      |                  TO USE   (%)               |
=====================================================================
Proficiency           | (very) easy | reasonably easy | (very) hard |
=====================================================================
no filter (any)       |     36      |        45       |       9     |
――――――――――――――――――――――|―――――――――――――|―――――――――――――――――|―――――――――――――|
1. novice             |     22      |        47       |      32     |
2. casual             |     32      |        51       |      17     |
----------------------|-------------|-----------------|-------------|
3. everyday use       |     44      |        47       |       9     |
----------------------|-------------|-----------------|-------------|
4. can offer advice   |     55      |        40       |       4     |
5. know it very well  |     59      |        36       |       6     |
=====================================================================

-- 
Nicolas Sebrecht