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STA 205 Exam 1 Questions with Correct Answers | Updated (100% Correct Answers)

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STA 205 Exam 1 Questions with Correct Answers | Updated (100% Correct Answers)

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STA 205 Exam 1 Questions with Correct
Answers | Updated (100% Correct Answers)
Population (definition) Answer: "all" values of interest

Census Answer: Looks at every value

N Answer: Population size

Survey Answer: To take a sample

Sample Answer: A specific number of values form the population
(subset)

n Answer: sample size

Types of Samples Answer: -Convenient sample

-Self-selected (volunteer)

-Quota Sample

-Random Sample

Convenient Sample Answer: Easy to obtain

Self-selected (volunteer) Answer: Participants choose o take part
(ex. questionnaires, polls, surveys)




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, 2
Quota Sample Answer: Making the sample meet the percentages
the population

Random Sample Answer: Every single value in the population has
the same opportunity of being selected

Simple Sample Answer: 1-step Ex. drawing names from a hat

Stratified Sample Answer: Several stages or steps of random
sampling

Categorical Data Answer: "category" Qulaitative

Ex. gender, class, religion, favorite flavor of ice-cream

*can only belong to one category at a time

*Zip codes--even though its numerical

Quantitative Answer: Measures the quantity numerical average is
meaningful

Ex. ages, incomes, distance, heights

Population Answer: Any value calculated from the population are
called Parameters

Sample Answer: Any value calculated from the sample is called a
statistic


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