The Life Starter
Sign up
Grade 8 · unit review

Review: Check What Counts as Confirmation

Compare independent records, sampling reach, denominators, and synthesis claims.

Download reviews and answer keys

Bring the unit skills together

Use these 4 new cases to check your reasoning. Choices are temporary and are not saved to an account, sent to staff or recorded as school grades. Download your current review choices before leaving or reloading.

Unit review questions
1. New original fiction: daily counter 60 entries; helper assists 9 people at noon; article credits the counter and repeats 60. Which is justified?
2. Fictional poll of 20 pottery-club respondents gives 14 yes, 6 no; nobody else invited. Which claim fits?
3. New record sets: A has 6 dated items out of 30; B has 9 out of 60. Which dated share is larger?
4. Independent volunteer exit cards: 7 liked a display, 3 did not. Door log: 25 entries including repeats. Which conclusion is supported?

The download contains your current choices and any checked feedback. Keep the separate transfer-task work in your own document; downloading its instructions does not mark it complete.

Use the skills in a new task

Original fictional records, same day: A door log 72 entries including repeats; B brochure credits A and repeats 72; C independent desk note “10 questions answered 1–2 pm”; D voluntary exit cards 15 liked the new layout, 5 did not. Earlier voluntary cards from a different day had 6 liked out of 10 responses. Write a short evidence memo comparing card shares, identifying dependencies and scopes, and deciding whether “all visitors approve” is supported.

Work on paper or in your own document. Explain the choices you made.

  • Identify B as dependent on A.
  • Separate entries, questions, and respondent opinions.
  • Compute 75% and 60% respondent shares with their denominators.
  • Reject universal approval using the recorded no responses.
  • Avoid treating the share difference as a population trend or causal effect.
Compare with a model response

B copies A, so their agreement is one entry-count chain. C counts ten answered questions in one hour, not all-day people. Today 15/20=75% of voluntary exit-card respondents liked the layout; earlier 6/10=60% did, a 15-percentage-point respondent-share difference. Five today did not, so all-visitor approval is unsupported and conflicts with those recorded responses. Different voluntary respondents and dates do not establish a population trend or a layout effect.

A different response can also meet the criteria. Compare the evidence and reasoning, rather than copying the wording.