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Grade 3 · unit review

Review: Design Data that Answers a Question

Plan a one-check table for three fictional boxes with IDsA,B,C and counts 2,3,4. Choose relevant fields, normalize an r material code and calculate a supported total.

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Unit review questions
1. Question: how many are stored?. Which field answers the question?
Need a hint?
  • Select the field that directly answers the stated question.
  • A field can be easy to collect but irrelevant to the purpose.
2. Entry b. Codebook: red/r=RED; blue/b=BLUE; blank=?; anything else=CHECK. Normalize the supplied entry.
Need a hint?
  • Use the supplied codebook to map recognized forms into one allowed value.
  • Standardizing a known spelling is different from inventing an unknown value.
3. The entire supplied record is one row, ID F/count 3. Policy: one row per item. Which identity condition is shown?
Need a hint?
  • Use the explicit input, condition and question aspect.
  • Reject a choice that adds an unsupported condition or answers a different question.
4. Complete fictional box counts are 7, 4 and 6 tiles. What is the total?
Need a hint?
  • Add the supplied counts only when every number represents the same kind of quantity.
  • A total loses meaning if kilograms and item counts are combined.

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Use the skills in a new task

Plan a one-check table for three fictional boxes with IDsA,B,C and counts 2,3,4. Choose relevant fields, normalize an r material code and calculate a supported total.

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

  • Use the pretend details in the task and name the rule you followed.
  • Show the steps or point to the detail that helped you choose.
  • Say one mistake to avoid or one thing this example cannot tell us.
  • Check your answer against the task. Change a part if you can show why it needs fixing.
Compare with a model response

I use ID, count and material; no home address is needed. The codebook maps r to RED. Counts 2+3+4 total 9 tiles for these three boxes, and each box ID appears once.

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