| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| horvitz and thompson 1952 | 0.48 | 0.2 | 8488 | 11 | 25 |
| horvitz | 1.04 | 0.2 | 7372 | 53 | 7 |
| and | 0.37 | 0.3 | 3210 | 69 | 3 |
| thompson | 1.54 | 0.3 | 968 | 7 | 8 |
| 1952 | 0.78 | 0.9 | 5371 | 7 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| horvitz and thompson 1952 | 1.08 | 0.5 | 6007 | 54 |
| sulston and horvitz 1977 | 0.18 | 0.1 | 752 | 79 |
| thompson and thompson 2008 | 0.98 | 0.8 | 4978 | 63 |
| thompson and halbert 2013 | 0.76 | 0.6 | 5735 | 63 |
| hooper and thompson 1973 | 0.32 | 0.7 | 8383 | 8 |
| william and thompson 2008 | 1.12 | 0.6 | 3136 | 22 |
| william and thompson 2007 | 1.91 | 0.5 | 9515 | 91 |
| thompson and thompson 1985 | 0.21 | 0.8 | 8405 | 75 |
| campbell and thompson 2008 | 0.85 | 0.6 | 6101 | 18 |
| hetherington and woodward 2003 | 1.13 | 0.7 | 4754 | 84 |
| ward and thompson 2012 | 1.99 | 0.4 | 4726 | 2 |
| wiliam & thompson 2008 | 1.83 | 0.5 | 4864 | 73 |
| horwitz and cope 1986 | 0.47 | 0.1 | 7251 | 57 |
| horwitz horwitz and cope 1986 | 1.55 | 0.4 | 3268 | 13 |
| zhang and horvath 2005 | 0.03 | 0.8 | 2192 | 88 |
| horvath and greenberg 1994 | 0.52 | 0.1 | 776 | 95 |
| horvath and bedi 2002 | 1.33 | 1 | 6557 | 52 |
| hopper&thompson 1980 | 2 | 0.6 | 6051 | 47 |
| holtz and kovacs 1981 | 0.65 | 0.1 | 709 | 89 |
| hopper and traugott 2003 | 0.75 | 0.1 | 8407 | 98 |
| hartup and stevens 1997 | 0.38 | 0.3 | 5127 | 96 |
| lorig and holman 2003 | 1.57 | 0.5 | 2604 | 77 |
| horwitz et al. 1986 | 1.45 | 0.2 | 5970 | 98 |
| thompson et al 2008 | 0.54 | 0.8 | 8345 | 78 |
| thompson et al. 2003 | 0.76 | 0.2 | 9589 | 57 |
