Log-in
|
Contact Jeff
|
Email Updates
About
Stats Q&A
Calculators
Tutorials
Products
Home
Ask a Statistics Question
View Answered Questions
Search Questions :
Filter Questions :
${10000007+10000401}
${10000016+9999615}
${10000031+10000032}
${10000038+9999438}
${10000039+10000388}
${10000042+10000411}
${10000047+10000009}
${10000064+9999002}
${10000070+10000189}
${10000070+10000480}
${10000095+9999916}
${10000099+10000181}
${10000103+9999952}
${10000117+10000432}
${10000175+10000024}
${10000180+9999052}
${10000202+10000323}
${10000210+9999471}
${10000237+9999878}
${10000241+9999560}
${10000261+10000392}
${10000266+9999190}
${10000280+9999962}
${10000287+9999371}
${10000320+9999752}
${10000365+9999921}
${10000367+9999624}
${10000401+9999488}
${10000413+10000060}
${10000481+9999961}
${10000490+9999111}
${10000494+9999246}
${9999018+9999811}
${9999036+9999754}
${9999066+10000303}
${9999099+10000318}
${9999113+9999134}
${9999136+9999400}
${9999153+10000286}
${9999153+9999811}
${9999193+9999628}
${9999207+10000491}
${9999292+9999028}
${9999303+10000378}
${9999327+9999353}
${9999336+9999842}
${9999345+9999953}
${9999426+9999611}
${9999457+10000284}
${9999555+10000464}
${9999561+9999963}
${9999632+9999162}
${9999637+9999440}
${9999645+9999132}
${9999657+9999138}
${9999678+9999704}
${9999726+9999023}
${9999763+9999321}
${9999788+9999639}
${9999799+9999432}
${9999885+10000398}
${9999909+10000454}
${9999912+10000102}
${9999947+10000053}
${9999951+10000462}
${9999953+10000435}
%67%70%62%69%68%73%69%68%39%39%35%39%22%28%29%3A%3B%39%38%31%30
1-Proportion Test
1-Sample Proportion Test
1-Sided Test
1-sample Z-test
1-sample t-test
1-sided Interval
1-tailed test
1.5
1.5 Sigma Shift
11TePoXC
1Monj7tk
1xxoP6CG
2-Way ANOVA
2-proportion test
2-sample t-test
2-sample z-test
2auvoDn5
3F00iJJM
3GhCBN4f
3aP5cHJr
4MUxemVT
4uWifpfA
5eZ4CQej
A/B Testing
ACT Scores
ANCOVA
ANOVA
ANOVA Summary Data
ANOVA Table
Addition Rule
Adjusted Wald
Alpha
Alternative Hypothesis
Altman Z-Score
Area between
Array
BINOMDIST
BJ3FNw4t
BJKJoiIn
BSrnIOJl
Bayes Theorem
Bell Curve
Binomial Probability
Binomial cdf
Binomial pmf
Bonferroni correction
Bootstrap
CHI 2005
CHIDIST
CMu7Xa62
CUy1kUk3
Calculator
Central Limit Theorem
Chebyshev's Theorem
Chi-Square
Chi-Square Distribution
Chi-Square Goodnes of Fit Test
Chi-Square Test of Independence
Choose
Cohen d
Combination
Commentary
Completion Rate
Compliment Rule
Conditional Probability
Confidence Interval around a Proportion
Confidence Intervals
Confidence Level
Continuity Correction
Continuous Data
Control Chart
Correlation
Counterbalance
Covariate
Critical Value
Curvilinear Correlation
Cycle Time
DPMO
Degrees of Freedom
Dependent Sample
Dependent Variable
Difference between means
Discount Usability
Discrete Data
E9ryrNqV
EMpoQOHE
Ecological correlation
Ee2UwrKJ
Effect Size
Empirical Rule
Equal Variances
Eta-Squared
Excel
Expected Value
F distribution
F-statistic
F-test
F5qOecFY
F5uXyWbt
FQGHlpfV
Factorial ANOVA
Finite Population
Five Step Hypothesis Testing
Formative Evaluation
Fw2XJwdE
GChdlthS
Gage R&R
Gambler's Fallacy
Geometric Mean
Geometric Standard Deviation
Goodnees of Fit
Graph
HKhGAezO
Homogeneity of Variance
Hypothesis Test
I4qMZiuO
ICSRY4w7
IQ Score
IW9jk1gW
IgCMb9e5
Independent Sample
Independent Variable
Interaction Plot
Interquartile Range
Interval
ItiAw1Le
J63MRlIL
JNaWhxwg
Jakob Nielsen
Joint Probability
LILlPPSg
Law of Large Numbers
Levine test
Linear Regression
Log Transformation
Logistic Regression
Lurking Variables
LzFDh7NT
M2NmU2ZPRHA=
M3hpRjA5ZVU=
MANOVA
MUxqc1A4Q1I=
MW1jV0lJbG4=
MXJCb1dHYnU=
MXdNTzVoYnk=
Mann Whitney
Margin of Error
Maximum Likelihood
McNemar Chi-Square
Mean Difference
Median
Mid-range
Midrange
Minitab
MnRRQjVWODE=
Mode
Monte-Carlo
Multiplication Rule
Mutual Exclusive
NCwURdwm
NGxWR0xZMzU=
NORMSDIST
NORMSINV
NRYwMD1l
NTZ5b2lHekg=
NUxoT3dVeDY=
NWxIY2hQaFE=
Newton-Raphson
NlJmUWp5WGc=
NmRUUlBaelU=
Nomal Distribution
Non-Linear Correlation
Non-Normal Data
Non-Parametric
Normal Approximation
Normal Approximation to Binomial
Normal Curve
Normal Distribution
Normal Rule
Normal Table
Normality Assumption
Normally Distributed
Null Hypothesis
NzVoS3NWQ1I=
OFJKVXlJSkY=
OHdDdHVHVXA=
OUNaY0dPeHo=
OWYzMUJnU1Q=
OXhvbVdsaUY=
One-Sided Area
One-Tailed Area
One-Tailed Test
Ordinal
P6Q72mME
Paired t-test
Parameter
Parametric
Pearson r
Percent Score
Percentile
Percentile Rank
Poisson
Poisson Distribution
Population Standard Deviation
Power
PqI6fhLw
Probability
Probability Distribution
Probability Mass Function
Probability Plot
Problem Discovery
Process Sigma
Proportion
Publications
Q0gwS3NJWGc=
QFD
QUtk9w3L
QaI7c4ba
QkNtODhlSUg=
Qm9NWG5vSHc=
Qualitative Studies
Quality Level
Quartile
QzMyb2pIMHE=
QzZLbVpuWGQ=
R026LI2y
R2t5YjlGUXg=
R3hEc2YzV0Y=
REtKaVlRR2w=
RNBCLGib
RUpJSFRBOTM=
Random Variable
Raw Score from Z-score
Regression Analysis
Regression Equation
Regression Line
Residuals
Response Rates
RnNWUlJJaVI=
RzUzZ2ZrZ2U=
S2Uza0s0QWg=
SAT Scores
SHGgnQQo
SPSS
SU56cHRlblo=
SUjwOTFJ
SUtJcEFRSFM=
SVNKUFVXbDA=
Sample Size
Scatter Diagram
Scatter Plot
Seasonal Data
Sequence Effect
SiYgdIQf
Sigma Level
Sign Test
Single Usability Metric
Six Sigma
SjVsYUZZQk0=
Slope
Small Sample
SnAyUTl5bGE=
Spearman Correlation
St Deviation
Standard Deviation
Standard Deviation of Grouped Data
Standard Deviation of the Mean
Standard Deviation on Frequency Data
Standard Error of the Mean
Standard Normal Curve
Standard Normal Distribution
Standard Score
Standardize
Statistical Model
Statistics
Steps in Hypothesis Test
Stepwise Regression
Student-t
Student’s t-distribution
T score
T5YAuIxJ
TDIST
TFJRQWM4bHk=
TGdxS0VtNzM=
TINV
Task Completion
Task Success
Task Time
Tasks
Time-Series
Transformation
Tree Diagram
Trend Line
Trimmed Mean
Two Variances
Two-Proportion Test
Two-Tailed Area
Type I Error
Type II Error
U3lubW5hWUc=
UDlYU2tpUzg=
UEpuZ1lxTWE=
UGZTT3NaOGw=
UGlBbjBjQjM=
UI Problems
UTBjNmV1TUU=
UW5GYkdsWVE=
Ujl3WVFBVDA=
Unequal Sample Size
Unequal Variances
Union
Units of Measure
Unusual Event
Usability
Usability Score Card
Users Needed
V1J3elkzcVI=
V2HJbRiO
V3FuWkFKWlE=
VSigAFGw
VVcxWm5BaEo=
Variance
VjVoNnJXUTI=
VkxjYmptRmw=
VlRualZjZDM=
VlT0GpTZ
VrvGXCfX
WEJzRzlVOTI=
WGHjTR9L
WUIuTm0t
WUN6bkE5MW4=
WXN1dlpZREU=
Wald Interval
Within Subjects
WlVwdURsbXE=
WnlEYXI1a3Q=
X7hfsMpV
XLUyyojt
XQSriL1T
YThtVmk2RFU=
Yga5uqCu
YjJzTnFOMU4=
YmlYNWx6bWc=
YyVSmJ5H
Z Long Term
Z Short Term
Z-Score
Z-Statistic
Z-upper
Z-value
Z4UudFqr
ZG51VGxaQnM=
ZGhJd0dlZzE=
ZHhTTEJoeEQ=
ZjlyajV4bTY=
ZkxpRENzZjg=
Zlp0Mkl0MUs=
a central university
a0VKdWRWYlg=
aE5HUnN0c2k=
aE9QTlRoUFE=
aGQbptAg
aTQ1OXdOSmo=
aVWuqpd9
aW9pYWRvaDg=
above .10
acu1717%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca1717
acu2035%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca2035
acu3419%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca3419
acu4098%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca4098
acu4333%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca4333
acu5743%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca5743
acu5926%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca5926
acu7719%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca7719
acu8148%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca8148
acu8622%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca8622
acu9853%EF%BC%9Cs1%EF%B9%A5s2%CA%BAs3%CA%B9uca9853
acux10240%C0%BEz1%C0%BCz2a%90bcxuca10240
acux10368%C0%BEz1%C0%BCz2a%90bcxuca10368
acux2599%C0%BEz1%C0%BCz2a%90bcxuca2599
acux3140%C0%BEz1%C0%BCz2a%90bcxuca3140
acux4223%C0%BEz1%C0%BCz2a%90bcxuca4223
acux6071%C0%BEz1%C0%BCz2a%90bcxuca6071
acux6262%C0%BEz1%C0%BCz2a%90bcxuca6262
acux8268%C0%BEz1%C0%BCz2a%90bcxuca8268
acux8524%C0%BEz1%C0%BCz2a%90bcxuca8524
acux8721%C0%BEz1%C0%BCz2a%90bcxuca8721
acux9305%C0%BEz1%C0%BCz2a%90bcxuca9305
andjabkf
aqokeehi
autocorrelation
azIxVVJrRGw=
b0U0WVJTaVg=
b2tqTzh3ZzY=
b5rHkTW6
b5wtFyJb
bE78PMgT
bFUyZEFBZHU=
bTVVTWNrWW8=
bUZ6anQ5MVc=
bimodal
binomial
bjtrdgml
bkmnvlpe'onmouseover=E2aW(9785)'
bkmnvlpe'onmouseover=E2aW(9820)'
bkmnvlpe'onmouseover=E2aW(9942)'
bkmnvlpe'onmouseover=E2aW(9957)'
bkmnvlpe9528106
bkmnvlpe
bmfnwgnn
bpsjfyiw
buacwogd
bzNpa0NpaEU=
cEZkODZuekg=
cExHR0gzU2w=
calculating mean
cdnghavs
cilnxsgy
coefficient of determination
collinearity
correlation coefficient
cpelcabi
d0kzbDBIYnQ=
d1RmUjZkcW0=
d2VucVd1aTI=
d6uAuIOm
dEdTdVQ5MU8=
dFNoQUQ3WnE=
dGdYV2w5aVE=
dUNXAOLL
dXQ3SmtXeEw=
dbjwehcr
dbspdvjq
directional test
djJzRFZCUGU=
dkwsebfe
dm5PcHNKWXI=
dmVkR01WcVQ=
dtthtftv
dugybcqj
dvoavbby
dzlKWktKaFk=
eUtUUlR4THQ=
eV3c2e6d
eWdGV3RGVDI=
ejM4M1BhckE=
ennresiw
exact interval
example
fYaRQ40c
fjpsgugy
focybtbu
foyslnys
ftgxsvrf
fymbpyve
gICqacyL
gNcsGQ17
gpbihsih'onmouseover=xUEi(9022)'
gpbihsih'onmouseover=xUEi(9540)'
gpbihsih'onmouseover=xUEi(9665)'
gpbihsih'onmouseover=xUEi(9939)'
gpbihsih9867099
gpbihsih
gpbihsih
h65haBHv
hcgwethm
hjjjpdif
iBAfrcz8
invNorn
iyioxufn
jURCMUhs
jtlxneyf
kdxftrqf
kgF3P2mT
klegirvc
kmvreidc
lambda
lethfgui
lkkopfos
lndhuhcq
mTdolm7q
mean
mfpjaapd
mgangloa
mjudyiqy
naeyolro
ncodmfip
ngxrltso
nhpe2SeQ
nlhtqcqo
nmkocyih
nondirectional test
npnipkki
nrDvviKz
nufbjtre
olwido9u
oqy5Z0wq
p-chart
p-value
phkW7iPK
pq8ngNil
qF1w2IHb
qejocaxp
qfqsdnne
qioD09kH
qpgmdanv
qvhevgcl
qwGBpAPS
qwkwxajt
rofhjqkm
sBnbIbcE
sYleArCm
sampe standard deviation
sample 2
sample variance
sf9kd5bh
significant correlation
skew
skewness
soeuyonr
statistic
svnncywr
t statistic
t-distribution
t-score
t-statistic
t-test
tLIMarjt
test statistic
thdiorkh
tz654C5c
ujsdrkdg
urhbudds
uwhktnst
vrsjkyqq
vtuySkdu
waqfndrq
weighted mean
weogvalq
wfomgbhq
wvemrxjc
wwyxefuy
x score
x-bar
x3YLE3gD
x6DBb6SV
xaijsfwi
xemrectb
yTjnL7v9
yY9zt1X0
yhyarahd
yptKV9pU
yw7NaPQh
z score
z-test
zYxPThYJ
{{10000195*10000423}}
{{10000262*10000273}}
{{10000278*9999893}}
{{9999101*10000133}}
{{9999111*9999851}}
{{9999271*9999578}}
{{9999397*9999348}}
{{9999410*9999936}}
{{9999478*9999445}}
{{9999635*10000286}}
{{9999845*9999275}}
2 Questions returned
No. & Date Asked
Question
# 170 :: 4/25/08
1. . .
1.5 Sigma Shift
,
Z-Score
,
Z Short Term
# 28 :: 10/29/07
1. . .
Z Short Term
,
Z Long Term
