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Lecture 5

PSY 308 Lecture Notes - Lecture 5: Bloor Street, Confounding, Statistical Hypothesis Testing


Department
Psychology
Course Code
PSY 308
Professor
Dana Williams
Lecture
5

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

Experiment:
Marijuana experiment example:
Independent variable:

 ! " #$%&'  (' 
#'  !' ) 

Confounding variable:)*+,#'**!
-*')*#   *+
.!-! ##!
 / !*0 #1+2
 ) " ! *'*3 
 ## #+
Dependent variable:*
% ) '* !**# 
% 4#"5## 673## 
## 
% 4#" 3+8  '*#Quasi
Experiment"7##!'7* ) +
*!  '*!  - 
**!9:!+
o;33 !# !8<"
QUASI EXPERIMENT
o=! >%=!
?%$*  $?* + >!!
# "
%  * 
%@  
%)#
%"! 
%%' 
%A)
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Measurement Sensi$vity: ##! 
 )! *+8   )! '**  
Popula$ons and Samples
Popula$on: #3+
4#"#'3##)
Sample"  ##)* *
2# )!#"# # )! #)
##)
4#"* $%&%*%  *'**(  
$%& +B('##'*##
C  #"4#"# *    * (
A  
o.*# )! #  random sample"!*
##) D  
#
o4#"; *##)2*   +;   
32* 6** #6
E !*  (3+.*
 # C D )/  
##*3 ## * 1
%  #"*##9 #)#*
*!*-##7#)#* *
o"  ## / 1
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