Quiz
STA 115 In-Class Notes Practice
Este quiz tem tipos de pergunta que abrem no player de sempre.
Perguntas do quiz (10)
1Statistics is a set of [blank_start]procedures[blank_end] for analyzing info to help make a decision.
- Aprocedures
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.- Ainformation
- Banalyzing
3Population: entire group
Sample: [blank_start]subset[blank_end] of the population- Asubset
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?)- Arelationship
- Bcause
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- Apopulation
- Bsample
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- Ainfluence
- Bcause
- CExperiment
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- Apopulation
- Boccur
- Cobjective
- Ddata
- Edescribe
- FAnalyze
8It is important to avoid biased data.
- AVerdadeiro
- BFalso
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- Aeasiest
- Bchoose
10You should always do convenience sampling or voluntary response sampling. You avoid bias by either selecting yourself or having people volunteer.
- AVerdadeiro
- BFalso
Informações
- Descrição
- This is a practice quiz based off of notes I've taken in class.
- Autor
- Cindy Nguyen
- Idioma
- English
- Visualizações
- 41
- Etiquetas
- Avaliação
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