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CCJ 4700 Exam 2 Stewart Questions and Answers | 100% Pass

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CCJ 4700 Exam 2 Stewart Questions and Answers | 100% Pass What are the 3 components of a classical experiment? - Answer-1)Pre & Post- Testing 2)Experimental & Control groups 3)Random Assignment ____________ Assignment Is a central feature of the classical experiment - Answer-Random Assignmen...

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  • October 3, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CCJ 4700
  • CCJ 4700
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EmillyCharlotte
EMILLYCHARLOTTE 2024/2025 ACADEMIC YEAR ©2024 ALL RIGHTS RESERVED,
FIRST PUBLISH SEPTEMBER 2024

CCJ 4700 Exam 2 Stewart Questions
and Answers | 100% Pass

What are the 3 components of a classical experiment? - Answer✔✔-1)Pre & Post-

Testing

2)Experimental & Control groups

3)Random Assignment

____________ Assignment Is a central feature of the classical experiment -

Answer✔✔-Random Assignment

Random assignment... - Answer✔✔-Reduces sources of bias & Creates equivalent

groups

Criteria for causality: - Answer✔✔-1)Cause must come before effect

2)We have to show cause(x) came before effect(y)

3)We have to rule out rival explanations

Threats to internal validity: - Answer✔✔--History(past events may confound results)

-Testing(Retesting influences peoples behavior)

-Selection Bias(volunteers may choose to participate in certain study)

Why do we use sampling? - Answer✔✔-Bc... Its often not possible to collect info from

all persons we wish to study & Its often not necessary




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, EMILLYCHARLOTTE 2024/2025 ACADEMIC YEAR ©2024 ALL RIGHTS RESERVED,
FIRST PUBLISH SEPTEMBER 2024
Two things to do when selecting samples: - Answer✔✔-Select samples to represent

a larger pop. of people/things & generalize from a sample to an unobserved population

the sample is intended to represent

When is a sample "representative" of the population? - Answer✔✔-When the

aggregate characteristics of the sample closely approx. those same characteristics in

the population

2 adv. of population samples: - Answer✔✔--Typically more representative than other

types of samples because they avoid biases

-Permits us to estimate the accuracy of the sample

Why is standard error important? - Answer✔✔-Bc it indicates how closely the sample

estimates will be distributed around the population parameter

As sample size increase ---> Standard error _______ - Answer✔✔-Decreases

If sample size is quadrupled then standard error is: - Answer✔✔-Reduced by 1/2

What is the sampling Frame? - Answer✔✔-List of the population that one is

interested in studying

What are the types of probability samples? - Answer✔✔--SRS

-Systematic

-Stratified

-Cluster

SRS - Answer✔✔-Number is assigned to each member in the frame and then a

random number generator selects elements

Systematic - Answer✔✔-You randomly select every nth number on a list

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