Guessing Strategy and Probability Tables

Do not guess randomly!

Because the LSAT does not assess a scoring penalty for incorrect answer choices, you should always guess on every question that you cannot complete during the allotted time. However, because some answer choices are historically more likely to occur than others, you should not guess randomly. The following tables summarize which answer choices have occurred most frequently over the years.

LSAT Answer Choice Probabilities
   
A#
763
433
382
1578
A%
18.4%
19.6%
20.0%
19.1%
B#
854
464
393
1711
B%
20.6%
21.0%
20.6%
20.7%
C#
850
433
374
1657
C%
20.5%
19.6%
19.6%
20.1%
D#
884
473
374
1731
D%
21.4%
21.4%
19.6%
21.0%
E#
788
405
389
1582
E%
19.0%
18.3%
20.3%
19.2%
Total #
4139
2208
1912
8259
LR
RC
LG
TOTAL
 
All Answer Choices June 1991 - October 2015*

The table above documents the frequency with which each answer choice appeared as a percentage of all LSAT answer choices between June 1991 and October 2015 inclusive. If history holds, you would be best served on the test as a whole by always guessing answer choice (D). Do not choose random answer choices; do not put in a pattern such as A-B-C-D-E etcetera. Although guessing answer choice (D) does not guarantee you will get the questions correct, statistically speaking guessing answer choice (D) gives you a better chance of answering correctly than guessing randomly.

Last Five Answer Choices Per Section June 1991 - October 2015*
 
A#
125
69
92
286
A%
15.2%
16.8%
22.4%
17.4%
B#
159
93
86
338
B%
19.4%
22.7%
21.0%
20.6%
C#
163
75
73
311
C%
19.9%
18.3%
17.8%
19.0%
D#
181
94
80
355
D%
22.1%
22.9%
19.5%
21.6%
E#
192
79
79
350
E%
23.4%
19.3%
19.3%
21.3%
Total #
820
410
410
1640
LR
RC
LG
TOTAL
*These statistics do not include the unreleased February 1998
and February 2001-2015 LSAT administrations.

As the second table indicates, if you cannot finish the final questions in a section, in the Logical Reasoning section you should always guess answer choice (E). In the Reading Comprehension section you should always guess answer choice (D), and in the Logic Games section you should guess (A).

Please keep in mind that the strategies discussed above hold only for pure guessing. If you are attempting to choose between two answer choices, do not choose solely on the basis of statistics alone!

On a related note, if you are a strong test taker who correctly answers most questions but occasionally does not finish a section, quickly review the answer choices you have previously selected and use the answer that appears least as your guessing answer choice. For example, if you have completed twenty questions in a section, and your answer sheet contains a majority of (A)’s, (B)’s, (C)’s, and (E)’s, guess answer choice (D) for all of the remaining questions to get the percentage of each response as close to 20% as possible.