| Study | Detail |
Error Rate
|
| Card, Moran, & Newell [1980] | Errors using command-line text editor, experienced users. |
30%
|
| Card, Moran, & Newell [1980] | Errors using 10 command-line systems, 28 experienced users, 14 tasks. |
33%
|
| Card, Moran, & Newell [1980] | Errors using command-line text editor, highly experienced users. |
30%
|
| Card, Moran, & Newell [1983] | Experiment 5C, p. 177. 70 tasks. 7 typing errors, correction taking only 4% of total correction time. 3 "Big Errors," correction taking 72% of correction time. |
37%
|
| Chan, Lu, & Wei [1993] | Percentage of 136 surveyed professional SQL users who say they usually take more than one try to do a query. |
82%
|
| Dhillon [1986] | Procedural error in reading list of instructions. Per list. |
6.5%
|
| Gould | Reisner, 1981. Query specification errors in QBW, 39 high school and college students. Per query. |
33%
|
| Gould | Reisner, 1981. Query specification errors in QBW, 39 high school and college students. Per query. |
33%
|
| Greenblatt & Waxman [1978] | Query specification errors, paper and pencil exercise. Per query. |
25% - 27%
|
| Ledgard [1980] | Percentage of erroneous commands in text editor. 8 experienced users. English-like editor, notational editor. Per command. |
5.6% - 9.9%
|
| Reisner [1975] | Query specification errors on final exam, SEQUEL, programmers. Per query. |
22%
|
| Roberts [1979] | Text editor, time spent in error recovery, not percentage of actions. Excludes errors corrected in a few seconds. 8 text editors, 4 experience users apiece. Percentage of command time. |
11%
|
| Smelcer [1995] | 20 undergraduates with 80 minutes of training in SQL. Only counted errors in which a required join was not used. Percentage of queries with such errors. 6% if low memory load, 12% if medium memory load, 17% with high memory load. Per query. |
14%
|
| Swain & Guttman [1983] | Using a checklist incorrectly (cascade of tasks, not single task). Per checklist. |
50%
|