Command of Evidence (Quantitative) — Identifying Distractors

How to Approach It

Command of Evidence (Quantitative) distractors are built around true-but-wrong data statements. Almost every wrong choice in a COE-Q item is an accurate reading of the table or graph; it just fails to support the specific claim being tested. The five trap shapes to learn are: single-data-point, wrong-column, wrong-time-period, partial-claim, and irrelevant-true-fact. Each is a real number from the chart placed in the wrong relationship to the claim.

Single-data-point distractors cite one row or column of data when the claim describes a trend or comparison. If the claim says germination improves as soil moisture rises from very dry to moderately moist, a single-data-point trap might say 'the lowest rate appears at 5% moisture' or 'the 20% moisture condition has a 62% germination rate.' Both numbers are correct. Neither captures the trend. The right answer cites the change across the range — from 18% at 5% to 79% at 30% — because the claim is about a directional pattern.

Wrong-column distractors use the correct number from the wrong variable. When the table has two or three columns of data, a distractor may pull a number from a column unrelated to the claim. If the claim is about industrial output, a wrong-column distractor cites an agricultural employment figure. If the claim is about strength, a wrong-column distractor cites brittleness. These traps work because the number itself appears in the table and looks like proof. The defense is to circle the column that matches the claim's variable before looking at choices.

Wrong-time-period distractors use the right column but the wrong years or dates. If the claim describes change between 1880 and 1920, a wrong-time-period trap may cite only the 1920 value. That value is correct but cannot show change without a comparison. Wrong-time-period traps are particularly common in history and economics items where tables span multiple decades. The defense is to underline the date range in the claim and require the evidence to span the full range.

Partial-claim distractors support one half of a two-part claim. If the claim says industrial output rose while agricultural employment fell, a partial-claim trap supports only the output rise or only the employment fall. The right answer must cover both variables. When the claim joins two variables with 'while,' 'and,' or 'as,' check that the evidence covers both. Partial-claim traps are the most common trap in two-variable items, because they look like complete evidence at a glance.

Irrelevant-true-fact distractors describe a feature of the table that is not what the claim asks about. 'The table includes four moisture levels.' 'Both columns contain numerical values.' 'The data is presented in percentages.' These are correct observations about the table's structure that say nothing about the claim. They are usually the easiest distractor to spot, but on a long test they catch students who are tired and grabbing the first plausible-sounding choice.

When you review COE-Q misses, label the trap shape you fell for. Single-data-point and partial-claim traps catch most students; wrong-column and wrong-time-period catch students who do not anchor on the specific variable and date range. The practice questions below show you the correct answer up front and ask you to identify the strongest distractor. Doing this trains you to evaluate every true data statement against the claim, not just against the table.

Example Questions