Management information system technology exam

            Note

  1. This deal-out is open-book. Yay!
  2. Coercion ERQ investigations (Q26 & Q27), if you promote to delineate ERDs by artisan, directly follow pictures of your disruption and implant them in this Word doc.
  3. Upload a only PDF smooth, by 3:35 PM (4:50 PM coercion protracted span).

Good Luck!

  • (10 points) Suppose you lacked to scrutinize a lore investigation: “What factors may govern individual’s annual remuneration?” To retort this investigation, you primary convene the coercionthcoming variables from a bunch of identicals:
    • Annual remuneration, measured in thousand USD
    • Schooling, measured in year
    • Age, measured in year

            Next, you detail a retrogression standard:

                                Annual remuneration = Intercept + b1*Schooling + b2*Age

            Finally, you extend the retrogression segregation in Excel. The results are presented below:

 CoefficientsStandard Errort StatP-value
Intercept20.001.600.120.04
Schooling2.000.130.900.01
Age1.000.820.030.12

            Based on the aloft retrogression results, retort the coercionthcoming investigations:

            A)   Among three coefficients, which of them are expressive? How do you identicalize them?
(3 pts)

            B)   Consider its opinion flatten, what does the coefficient b1 medium? (2 pts)

            C)   Consider its opinion flatten, what does the coefficient b2 medium? (2 pts)

            D)   Suppose there is an identical who is 30-year-old and elapsed 15 years in develop. Using the standard aloft and whole three coefficients, compute the “predicted” annual remuneration coercion this identical. (3 pts)

  •  (4 points) Suppose we feel a 1-to-frequent conformity betwixt Uber drivers and Uber rides.
  1. When we turn this ERD into a argumentative groundsbase, how frequent tables should we feel?
  2. Which manifestation conquer answer as a coercioneign explanation?
    [Hint] Which manifestation can uniquely warrant individual annals in a cognate (foreign) existence?
  • (4 points) The coercionthcoming conformity depicts who borrows which books at GW Gelman library. Decompose this frequent-to-frequent conformity using a couple of individual-to-frequent conformitys.

  • (12 points)

After graduating from GW, you flow to extend an e-commerce website through which you hawk some shy products to consumers. To secure instituted, you build an awesome website based on the experience you’ve versed from our Web Design lab. Next, you rouse thinking what grounds your groundsbase should abundance.

Requirements: Delineate an ERD to detain the grounds requirements of extendning a smwhole interest mentioned aloft. Think from a interest owner’s perspective. Use despicable signification to identicalize cardinality. Clearly, the most significant instruction you lack to retain course of is:

“Consumers can locate mandate.”
“From each direct, we apprehend who purchases what products coercion how frequent units.”

You can bring-about some realistic assumptions if they acceleration. Follow the rules below:

  1. Use individual-to-frequent conformitys only, and
    1. Feel at meanest 3 manifestations coercion each existence you defined.

[Hint] Coercion “units”, recwhole the students-take-courses sample. Think: In which existence should we abundance the progression? The similar logic applies here.

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