Exam #1 questions...

2/5/2019

As you know, Exam #1 must be completed before midnight on Wednesday, 2/13/2019. This exam will be available all day Wednesday. and you can take it anytime during the day, until Midnight. It is a timed test and should not take more than 30-45 minutes to complete.

If you have any questions about specific items on the PRACTICE test (available on the Notes & Practice resource page), please post it here:

4 Comments

Mac

2/10/2019 03:30:32 pm

A couple of practice test questions:
For 5c and 5d, grade level is identified in the answer key as a correct response for both quantitative and categorical variables.
- In this example, grade level is the constant; is a constant also identified as a variable?
- And, how/in what way is grade level ever considered a quantitative variable?

Greg Sherman

2/11/2019 08:10:09 am

Grade level is a variable, but since it is held constant among all study participants I agree that this should have been marked as only a known constant (5a) instead of a variable (5b). And regarding the TYPE of variable (quantitative versus categorical), I indicated that it "could be both" because yes, it is a category of student, but it is also a numerical value that has an intrinsic degree with actual amounts (age, abilities etc.) implicit in the number. Grades can be viewed in a manner similar to age, a variable that could be categorical or quantitative, depending on its use.

Melissa

2/11/2019 06:22:08 pm

Practice question #16: could this also be Instrumentation/Instrument decay?

Greg Sherman

2/12/2019 06:06:23 pm

Melissa,

You bring up a good point, and based on the material in the course notes I think the correct answer could be either testing OR instrument decay ("...The test itself may have unintended consequences...". However, this typically addresses the act of testing in general, and not instrumentation effects. SO in the case of this item, I would accept either answer as correct.

Instrument Decay typically addresses the manner in which data from a single instrument (or situation) is evaluated after it as been implemented or administered. The best example I can give of Instrument Decay (from my own experiences) is how I tend to score essay items differently the more exams I score...especially if I am using a new rubric. Things pop out hat I direct my assessment efforts toward, and the whole nature of scoring tends to change.

Exam #1 questions...

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