Qualitative/Quantitative and Observation/Inference by HC12110909719

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									Qualitative/Quantitative and Observation/Inference
Mrs. Berbeco
9/22/10

   1. Carefully study the picture in “At the Scene of the Crime: Part 1” for 3 minutes. Do not
      look at the back of the page.

   2. Take 3 minutes to answer as many of the questions, 1-21, as you can on a separate sheet
      of paper.

   3. Copy the following definitions on your separate sheet of paper:

Qualitative - a descriptive, nonnumeric observation or
piece of data

Quantitative - a numerical observation or piece of data,
should be accompanied by unit of measurement

Observation - something directly seen or experienced

Inference - a conclusion drawn about a situation that is not
directly observed
   4. For each of the 21 responses from “At the Scene of the Crime,” identify whether it is
      qualitative (L) or quantitative (N) and whether it is an observation (O) or an inference (I)
      by writing the two appropriate letters next to each response.

   5. Ideally, have someone do 1-4 independently of you and discuss your responses, spending
      more time on areas of disagreement. Qual/quant is almost always clear-cut one or the
      other; sometimes observation/inference can be successfully argued either way depending
      on how you see what you see. The important part is to substantiate your responses.

   6. Return to the “Observation/Inference” worksheet you completed after our Variables quiz
      (I may have it if you are/were absent) and, using your new knowledge of the definitions
      of these terms, change any answers you think should be changed. Discuss any that you
      find ambiguous (unclear) with a classmate or ask the teacher.

								
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