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Chapter 14

CSC318H1 Chapter Notes - Chapter 14: Null Hypothesis, Usability, Dependent And Independent Variables


Department
Computer Science
Course Code
CSC318H1
Professor
Olivier St- Cyr
Chapter
14

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CH 14 – EVALUATION STUDIES

USABILITY TESTING


o
o


o
o !"#

Methods, Tasks and Users
o$%&
oMethods

"

#

'
((
)

*"

#(

oTasks

+,
-,
oQuantitative Preformance Measures
.
/
&

&

-
-
-
-
-
oNumber of Users"0./
*&!
!""
!

Labs and Equipement
o123
oUsability Labs
"
45

6+"7

o'5!2lab-in-a-box3
oRemote Usability Testing#
"#

8!'23

o8
o$
$



o
9

o
'
*'
o
+

o
+
 
o
$
 $
o
'
 '
o
+
 +
$!
HYPOTHESIS TESTING,
23
oHypotheses

oIndependent Variable:

oDependent Variable:
, ;

o<



Null Hypothesis:

Alternative Hypothesis:!

Two-Tailed Hypothesis:&


$#
,

One-Tailed Hypothesis:&
!

Experimental Designs&
"=
&
o!1

$"
oDi3erent ParticipantsDesign

!
+:,,

8
-6,
#.
1
>?,

oSame Participants Design

8
*"
,
1
6,
Order E3ects:
"!

Counter-balancing:
5"
28@A"A@83
oMatched Participants Design
!
!""
!

8
,
A,
1

,
T-Test@&,/

o?
+!
o
9
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
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+

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+
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o
$
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o
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!
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+
&&
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