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STA 115 In-Class Notes Practice

Cindy Nguyen 10 preguntas

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Preguntas del test (10)

  1. 1Statistics is a set of [blank_start]procedures[blank_end] for analyzing info to help make a decision.
    1. Aprocedures
  2. 2Science of data: used for collecting, organizing, displaying, describing, and [blank_start]analyzing[blank_end] data.

    Data: pieces of [blank_start]information[blank_end] collected.
    1. Ainformation
    2. Banalyzing
  3. 3Population: entire group

    Sample: [blank_start]subset[blank_end] of the population
    1. Asubset
  4. 4Various ways of data collection:

    - surveys
    - observational studies (is there a [blank_start]relationship[blank_end]?)
    - experiments (is there [blank_start]cause[blank_end] and effect?)
    1. Arelationship
    2. Bcause
  5. 5Surveys

    Census: entire [blank_start]population[blank_end] is asked to respond to questions
    Sample Survey: [blank_start]sample[blank_end] is selected and asked
    1. Apopulation
    2. Bsample
  6. 6Observational Study vs. Experiment

    Observational Study: "What is" - look don't touch, no [blank_start]influence[blank_end]
    Problems with this?
    - can't determine [blank_start]cause[blank_end] & effect
    - if you want a cause & effect you would have to actively manipulate a variable ([blank_start]Experiment[blank_end])

    Experiment: determines cause & effect
    1. Ainfluence
    2. Bcause
    3. CExperiment
  7. 7Inferential Statistics: analyses for data from a sample to infer something about a [blank_start]population[blank_end]
    Probability: likelihood that a certain outcome will [blank_start]occur[blank_end]

    Using statistics in the Research process:
    1. Identify [blank_start]objective[blank_end]
    2. Collect [blank_start]data[blank_end]
    3. Organize, display, and [blank_start]describe[blank_end] data
    4. [blank_start]Analyze[blank_end] data
    1. Apopulation
    2. Boccur
    3. Cobjective
    4. Ddata
    5. Edescribe
    6. FAnalyze
  8. 8It is important to avoid biased data.
    1. AVerdadero
    2. BFalso
  9. 9Convenience sampling: selecting individuals who are [blank_start]easiest[blank_end] to reach
    Voluntary sampling: Individuals [blank_start]choose[blank_end] to be in the sample
    1. Aeasiest
    2. Bchoose
  10. 10You should always do convenience sampling or voluntary response sampling. You avoid bias by either selecting yourself or having people volunteer.
    1. AVerdadero
    2. BFalso

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This is a practice quiz based off of notes I've taken in class.
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