Level 5 — Advanced · Technical & Evidence-Based Writing
Task 74: Judging Whether Evidence Is Enough
Write a short case and judge, explicitly, whether its evidence is sufficient for the conclusion it's asked to support — the production side of Lesson 74's evidence-sufficiency skill.
Learning Objectives
By the end of this task, you should be able to:
- Write a piece of evidence and a conclusion it's being asked to support
- Judge explicitly whether the evidence is sufficient, weak, or somewhere in between
- Name one concrete thing that would make the evidence stronger
Introduction
Lesson 74 taught you that the real question is never just "is there evidence?" but "is this evidence enough?" This task makes you write both a claim and an honest verdict on how well its evidence actually holds up.
Judging Sufficiency
Core Concept
Ask: how relevant is the evidence to this exact conclusion? How large or representative is it? How reliable is the source? Does it rule out obvious alternative explanations? A conclusion should only be as confident as its evidence earns — "some evidence exists" is not the same as "enough evidence exists."
Example
Three customers complained about slow delivery this month. Therefore, our delivery service has gotten worse. Judgment: weak. Three complaints out of an unknown total number of deliveries is a small, unrepresentative sample — it shows a problem exists for some customers, not that the whole service declined.
Your Turn
Your Turn
Write one sentence of evidence and one "therefore" conclusion about a workplace topic. Then write a third sentence judging the evidence: sufficient, weak, or mixed — and name one specific thing (a larger sample, a comparison, a longer time period) that would make it stronger.
Vocabulary in Context
sufficientadjectiveformal
enough to properly support a conclusion (পর্যাপ্ত)
Often with sufficient evidence, more than sufficient, not sufficient
“Three invoices are not sufficient evidence of a pattern.”
representativeadjectiveformal
accurately reflecting the larger group it's drawn from (প্রতিনিধিত্বমূলক)
Often with representative sample, fully representative, not representative
“The survey sample was not representative of all drivers.”
Model Answer
Show a model answer
Two of our twelve regional warehouses reported stock shortages last month. Therefore, our inventory system needs a full redesign. Judgment: weak — two out of twelve warehouses is a small fraction, and nothing here shows whether those two share a specific cause, like a local supplier issue, rather than a flaw in the inventory system itself. What would strengthen it: data showing shortages are spreading across more warehouses, or ruling out a local, warehouse-specific cause for those two.
Self-Check
Self-Check
- Does your judgment go beyond "yes" or "no" and give a real reason?
- Did you name a specific way the evidence could be strengthened, not just "more evidence would help"?
- Is your conclusion's confidence actually matched to how strong the evidence is?
Next: Writing 75 — Comparing Two Sources: writing about the same claim from two different sources and judging which one is actually more trustworthy, and why.