4.1 Data, Graphics, and Source-Based Questions

Read the Stimulus Before the Choices

A large share of GED scoring comes from how accurately you use information already on the screen, not from recall. The four GED tests run on a 100-200 scale, and each subject is timed separately: Mathematical Reasoning is 115 minutes, Reasoning Through Language Arts (RLA) is about 150 minutes, Science is 90 minutes, and Social Studies is 70 minutes. All four mix standard multiple choice with technology-enhanced (TE) formats delivered on the Pearson VUE computer interface.

That means the format is not the real skill. A four-option item, a drop-down sentence edit, a hot-spot click on a graph, and a fill-in-the-blank calculation all test one habit: find the evidence, decide what it means, and choose the answer that fits exactly. Predict your answer from the stimulus first, then look for the option that matches your prediction.

The GED is delivered at Pearson VUE test centers and through online proctoring, and a full battery is reported on the 100-200 scale per subject. Because each subject is timed and scored independently, your read-the-stimulus discipline has to hold even when the clock pressures you to skim. The fastest scorers are not the ones who skip the title and units; they are the ones whose inspection routine is so automatic that it costs only a few seconds per item.

Question-Type Map

On Math, you have an on-screen TI-30XS calculator on all but the first five items, plus a formula sheet and symbol tool. Knowing the tool exists prevents the most common Math trap: doing arithmetic by hand under time pressure and slipping a digit.

Data Displays: A Fixed Inspection Routine

For any chart, graph, table, map, or diagram, run the same routine every time.

1. Title - it names the subject and often the time period.
2. Labels and units - dollars, percent, minutes, meters, population, kWh, degrees, or votes.
3. Scale - a graph counting by 5s looks far different from one counting by 50s; a vertical axis that starts at 90 instead of 0 exaggerates small changes.
4. Task type - decide whether the item wants a value (locate or compute one number), a comparison (which is greater, faster, cheaper), a trend (what happens overall), or a conclusion (what the evidence supports).

The conclusion task is where points are lost. A worked example: a bar graph with the y-axis starting at 480 shows Town A at 500 and Town B at 520. The bars look like Town B is roughly double Town A, but the real difference is only 4%. An answer choice claiming Town B's population is "twice" Town A's is the classic truncated-axis trap. Eliminate any option that ignores units, reverses the trend, or claims more than the data proves, then re-read the exact wording before you select or type a value.

Sources in RLA, Social Studies, and Science

A source item may use a founding document, speech, article, workplace memo, editorial, political cartoon, historical account, or paired passages. Treat author, audience, date, purpose, and point of view as built-in clues. Primary sources are original records from the time or event (a letter, a law, a photo); secondary sources interpret or analyze those events later (a textbook, a modern article).

• In Social Studies, a map or political cartoon is a source: the caption, labels, symbols, and exaggerated features all carry meaning. Watch for the enduring-issues style item that asks which modern situation parallels a historical one.
• In RLA, the source is usually a passage, and items ask for central idea, inference, tone, the best supporting evidence, sentence order, or grammar/usage edits.
• In Science, the source may be an experiment description or data table, so identify the independent variable (what was changed), the dependent variable (what was measured), the control, and the measured result before you reason about it.

The best answer fits all relevant evidence. If a choice sounds smart but smuggles in outside assumptions, reject it. If a choice repeats a passage phrase but twists its meaning, reject it. GED items reward restrained conclusions: what is shown, what is suggested, and what cannot be determined.

A Worked Source Comparison

Suppose Science shows a data table: a plant given fertilizer grew 22 cm, the control grew 14 cm, over the same 30 days. A trap choice reads "fertilizer always increases plant growth." The table supports only "in this experiment, the fertilized plant grew more than the control." The word always generalizes far beyond one trial with one plant - exactly the overclaim GED Science penalizes. The supported answer stays inside the experiment's boundaries.

Final Rule

Do not ask "What do I know about this topic?" until after you ask "What does this stimulus prove?" That single shift protects points across all four subjects, and it is the difference between a passing and a College Ready performance on data-heavy items.