View Full Version : Statistics
- Comparing 2 means with Variance Unknown
- mediation analysis
- Which tests can be used here (numerical data with nominal data)?
- Nonparametric multiple linear regression with SPSS
- Polynomial regression help!
- SAS Output Help
- Need explanation on Ordinal Logistics Regression
- Probablity: How many events must be sampled ? distribution ?
- Repeated Measures Mixed Model
- Question Statistic
- SPSS data entry - what format should I use?
- Least squares - Exam prep
- Which stats test??? Sorry, probably stupidest question... ever
- Struggling with Stats- unsure which tests to use and how!
- Association btw. dichotomous and ordinal variables, controlling for dichotomous var.
- How do I compare variance and covariance accross groups (MANOVA)?
- bootstraps
- Help please !
- Transforming "Left Skewed" Data
- Accounting for covariate in a mixed-model anova?
- Extending an existing Excell dataset
- Measuring the voltage of a car battery
- Moment Generaunction Functions
- algorithm for solving a double integral with monte carlo method
- contingency table
- What is the difference between a nested and non-nested model in CFA?
- F Table
- single-case study
- Find the model to be used
- Need help on Null and Alternative Hypothesis question
- comparing two count samples to look for differences in four variables
- finding UMVU estimator of parameter γ(θ)
- Interpretting Levene's test (Stata)
- Simple Econometrics Exam Questions
- Normal distribution
- Sampling Distribution table
- finding UMVU estimator of θ^2
- Choosing statistical tool, manipulating data. Problems with categorical/continous.
- finding UMVUE of parameter 1/(1+λ)
- Hot dogs
- Help normalizing data
- Want to compare students with uneven number of tests taken
- Multiple linear reg (some obs. not independent)
- Small sample size and correlation - can anyone help me?
- Are percentages nominal, ordinal, interval or ratio?
- multiple regression with a small size sample
- Sampling distribution
- Longitudinal multilevel moderation analysis - stats geniuses, please help me!!
- Sampling Distribution Question
- T-test versus ANOVA
- I'm having trouble finding cronbach's alpha
- Yes/No Questionnaire Analysis
- Interpreting descriptive analysis result
- Kruskall Wallis or ranked One-Way Anova?
- How Variance of Latitude/Longitude Relates to Variance of Distance on Earth Surface.
- Dependence of Bimodal Distribution Analysis on Sample Size
- Minitab %Study Variation v Measurement Capability Index (%R&R)
- Time in terms of AM or PM - Interval or nominal?
- Calculating Margin of Error for confidence interval
- Central limit theorem, confusion over sample size.
- Data Transformation - Factor Analysis
- Testing the utility of a model with F-test and T-test
- Capability indicies
- Continuity correction for proportions
- Significant difference between group averages
- Normalizing non-normal data
- Contradictory multiple comparisons
- construct control limit from nonlinear profiles
- Confused with Homoscedasticity, PCA & AHC
- Intracorrelation Coefficient producing unexpected results..can you help me understand
- SPSS beginner NEED HELP with two way ANOVA
- What method to determine correlation between Project input and output characteristics
- Test Hypothesis and Significance
- How to anticipate moderating effects
- Difference between PCA and ICA
- Multiple Regression negative p-values. Help Needed Please.
- Subtract averages, square root of sum of squared indiv st devs, name of formula?
- New to statistics, intrigued and a little confused :-)
- Nonparametric analogue to two-way mixed ANOVA?
- Finding constant within Data Set
- Need help from statistic expert
- Calculating a p-value using R.
- Fishe's exact or Chi squaredwith Yates correction?
- "make an analysis of your own choice"
- Significance testing question for single population and binary or proportion data
- Residual plot -- what does this mean?
- help: what statistical test do I have to use?
- how to analyse questionnaire
- The difference of two normal (or just bell curve) distributions.
- Partitioning Longer Survey
- Quick Experimental Design Question RCBD
- Blocking two factors of different size
- Factor Analysis vs. PCA
- Logistic Regression / Weight of Evidence Transformed Variables
- Can I measure the significance of correlation between BMI and no. of organ changes?
- Equivalence Test on Measurement System
- Testing hypothesis.
- How is the following Vignette analysed using factorial design?
- How to test significance on one sample rating for >1 variables (ie 2 or 3 brands)?
- "is men more responsible than women" how to construct hypothesis.
- Repeated Measures Anova with a Fixed Factor
- What's an adjacency matrix anyway?
- Interpreting turning point in data (nonlin relationship) pleae help undestanding
- between subjects..change group to percentage?
- Yet another (advanced?) book thread
- Help with stats homework
- Inter-rater Reliability measure for ordinal data with multiple raters
- Estimation of Parameters - How to tell whether areas are different?
- Correlation test for two variables with repeated measures
- help with independent t test
- Statistics complete - any tips for my outcome measures would be appreciated :-)
- Taking expectation of average^2
- Normal distribution and population data
- One sample t-test
- probability distributions function
- Predicting convidence interval on expected values
- statistic and probability is is correct?
- Maximization problem!
- Interpretation of marginal effects, probit
- Is this a population or sample question ???
- Best way to analyze data on probability?
- Inter observer variability
- The wheat and chessboard problem
- Pearson correlation in SPSS?
- normal distribution of residuals
- Exam time
- Random Polling - Question About Expectancy
- How to analyse a variable with missing data in repeated measures study?
- chi squared test and standard error
- Data generation study with irt
- Non-parametric test (Wilcoxon, Brown Mood): How to compare median for each level
- predicting pass rates
- Please help me to interpret and analyse my results
- Inflection point out range of data :S
- Interpreting coefficient
- Basic Sample Size Stats
- Database Marketing --- Good Control Group Size
- A composite score ?
- I need help to find appropriate test for my proposal
- Qualitative understanding of Logistic Regression
- Reporting ANOVA degrees of freedom
- Kernel Matrix Not Positive Definite
- Log-normal distribution
- HELP!! i have a assignment due today and my professor only gave us a day to do it
- Two categorial variables - two chi-squared test
- Factor analysis: Is it necessary for items to be measured on the same scale?
- price in conjoint analysis
- Kuder-Richardson Reliability Coefficients (KR20) in SPSS?
- Basic biostats ques.
- Problem with t-Test (Help)
- Weighted Performance Ranking
- Regression equation, can't understand why my answer is wrong
- Two sample variance
- Statistics Final Exam Question
- Problem with significance level reading
- Even distribution
- Sample size calculation
- skewness and kurtosis test
- interval censoring with r
- Spearman's rank correlation coefficient question...
- Basic Expectation
- Std. Deviation In Excel
- Fisher's Exact test in SPSS - help please?
- Cross-sectional IV regression in Levine's "Fianancial intermediation and growth"
- [interaction] link, anova
- Does anyone have experience with this sort of Logistic Regression output (JMP)?
- Uncertain demand during a variable period - where does this formula come from?
- Basic question about correlation calculations
- Beta regression & zero values
- predict what shift in mean bell curve will look like for empl rating data scale 1-5
- why is this a right tail? [Hypothesis Testing]
- CI or margin of error?
- Mahlanobis Distance- Repeated Measures Data - using Observed data
- Dispersion/standard deviation
- margin of equivalence in a t-test
- How to specify ANOVA model
- ANCOVA Test?
- Component Analysis
- total deviation of the sum of unrelated means
- Meanings of a set of data
- About simple beam structure and pins
- Sample Variance & Population Variance
- Comparing Groups - Is a weighted t-test an appropriate choice?
- Advice on comparative analysis between two groups on Likert scale questionnaire
- Anova
- Nested Analysis Help
- regrouping deciles/quartiles
- R-Square in Anova Analysis- How is it calculated?
- hypothesis testing
- Bivariate normal distribution
- Regression analysis help needed!!
- Function to multiply matrices repetitively in R
- Genetic algorithm, confusion with selection/reproduction step.
- How to plot the following in R
- Should you transform skewed data when the distribution is expected?
- Couple Regression Questions
- Deciding if data is statistically different
- Factor scores and multiple regression
- Interview question
- Correspondence analysis: What determines the magnitude of the column coordinates?
- Variables which sum to a constant - ANOVA, MANOVA or none of the above?
- regression model, coefficient of determination, sufficient evidence, Durbin-Watson,
- Cronbach Alpha vs Pearson r
- The positive correlation between mean and standard deviation
- Density function help.
- Least Squares Slope
- Problem with significance level questions
- Caliper Matching
- d'prime for rating design
- How do you accounting for matching in statistical analyses?
- Parametric methods on Non-Parametric Data?
- Will missing data in a nested case-control matched study introduce bias?
- Deriving correlation coefficient for variables with same noise
- Using IRT items in SEM analysis
- Econometrics question
- Difficult Equilibria/Stability problem
- z-test?
- Cohen's d for one-sample/paired-samples vs. independent samples, and pooled SDs
- random sampling..
- Benjamini-Hochberg on large data sets. lack of significance issue.
- Instructions on how to install a package in R
- Simple Probability question - regarding playoff series formats and sports!
- Confidence Interval Of Regression Line
- Least Squares Parabola
- Which TEST does match?
- Urgent help for a project!
- Statistical test with within subjects design and categorical DV
- Help needed with statistical test (three diagnostic tests and three raters)!
- HELP! question -- power analysis / sample size justification
- What is the difference (employment wise) between MS Applied Stats and MS Stats?
- Is this a correct statement regarding a normal distribution?
- Design of experiments - ampling from already existing data
- Granger / Wald test interpretation
- lack of fit
- Test of proportions in 2 independent groups
- [SOLVED] What statistical operation is signifiied by giant 'S'?
- F test in TGARCH, EGARCH, etc
- Sample size with a % quoted
- When does a process of both chance and assignable causes of variation exist?
- Means are close - can effect be large?
- HELP!! STATS RIDDLE! Correlation and how it relates to SD
- Question about using ANCOVA and reporting in a paper
- What does F(1,14) = 6,912 mean?
- Test for similarity between two sets of data
- Is this the RIGHT way calculate the partial correlation matrix?
- Regression or Chi-Square?
- categorical variables in AMOS
- What does uncorrelatedness and independence imply?
- question on regression
- [SOLVED] Learning about network graphs (check my answers please)
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