PSYCHOLOGY 293
EXAM 2 FORMULA SHEET
Z-FORMULA FOR COMPARING A RAW SCORE TO A POPULATION MEAN:
z=
X
Z-TEST FOR ONE-SAMPLE MEAN:
z=
X
x
where, X =
or
n
=
2
n
T-TEST FOR ONE-SAMPLE MEAN:
t=
X
s
where,
PSYCHOLOGY 293
EXAM 3 FORMULA SHEET
CONFIDENCE INTERVALS:
Based on z
where, X
X z X
=
n
or
Sums of Squares:
Degrees of
freedom:
=
SStotal = SSgroup + SSerror
2
n
dfgroup = k - 1
Based on 1-sample t
PSYCHOLOGY 293 EXAM 1 FORMULA SHEET
=
X
N
X
X
n
=
z=
X
Range: Xmax - Xmin
X = z
Finding Quartile locations:
(median location +1) / 2
TSS = new + z new
IQR (H-SPREAD) = Q3 Q1
Maximum lower whisker =
Q
How to perform analyses in SPSS
Part I: What you need to know for the quiz
1. One and two way ANOVAS
Analyze General Linear Model Univariate
*IV(s) go in Fixed Factor box
*under Options you can get de
EXAM
2 REVIEW SHEET
PART CHAPTER 8 & PART CHAPTER 12: DISTRIBUTION OF SAMPLE MEANS
Understand conceptually the distribution of sample means (DSM)
Understand conceptually the Standard Error of the mean
REVIEW SHEET FOR FINAL EXAM
CHAPTERS 1-20
NEW MATERIAL: CHAPTER 19: CHISQUARE
Understand the distinction between
categorical and quantitative
variables
Understand when/why you would use a
goodness-of-