View Full Version : Statistics
- Posterior Distribution
- P=1
- Sequential AIC model selection
- Microbial Plate counts...A nudge in the right direction or a kick if required.
- standarizing data
- Help answering some questions.
- Chi Square help
- Icc
- Likert Scale Help
- Two tailed t-test for data sets that do not follow normal distribution?
- Split Plot Problem?
- Should I report Shapiro-Wilk to justify Mann-Whitney in Results section?
- power analysis for a t-test of two slopes
- Partial Correlations
- deriving chi-square stat for contingency table
- Random sampling with random factors?
- Would the 'F' value change if the raw data was converted from metric to imperial?
- Constructing a Confidence Interval
- How to choose the best distribution among various distributions if.....?
- Data normally distributed or not?
- Use raw data or log10 transformed data?
- Chi-square problem
- how to identify trends in a time series
- Negative effect size?
- OLS/random effects model question...
- OLS question...
- Using the distribution function method to obtain the of density 1-e^-x
- Significance level if running linear/quadratic regressions AND pairwise comparisions
- OLS zero conditional mean failure: Proving Biasedness. need help
- Metropolis-Hastings Algorithm
- What analysis on symptom/cause pair frequency table?
- Semi-partial Correlations
- HELP! I can't figure out what analysis to run on my data
- Degrees of freedom for combined means
- shortest confidence interval
- effect of one variable on many variables
- Mean of Adjustments in Centered Linear Models--Incorrect textbook?
- Compare event rates
- Calculation of Type I and Type II probabilities
- Working backwards with a z-test?
- Test of significance (ordinal scale, differences between M and F)
- Segmentation based on catigorical variables
- increasing the r squared
- Equivalence Testing
- Chi-sq. and pairwise
- Finding Variable Pattern within Predefined Clusters
- SAS beginner
- question regarding testing three-way interaction term in multiple regression
- When should I use confidence and prediction bands?
- Statistical inference- and power
- unbiased confidence interval
- Comparing two multi-rater kappas
- paired t test for categorical variable
- IG distribution
- My experiment and general questions about 1-way, 1-way, repeated measures etc
- correlation
- Very long post - need help thanks
- post hoc test for chi-square
- Is this assumption about standard normal pdf and cdf holds?
- Examining the differences between two groups - which test?
- ARIMA (p,d,q) layman's terms
- Is this result for expectation with normal pdf and cdf correct?
- How to determine multivariate confidence in laymans terms
- can mediator variable turn positive significant relationship into a negitive one?
- bayes estimator
- [SOLVED] [HELP] i need help with them plz
- How to Convert from Nominal to Interval
- Discrete Data in Multiple Linear Regression (SAS)
- Design effects (or variances) of sampling methods?
- Nominal variables in a multiple regression analysis
- Steps in Multiple Linear Regression (predictive model buildling)
- Standard Error of Percentages/Ratio of Means
- Need help in interpreting indepedant t-test score..
- Can we solve this equation with pdf and cdf?
- Probability of correct alignment
- Not so trivial problem with expected value
- Interpreting factor loadings
- Survival Analysis + Median Survival Times
- Maximum Likelihood Estimation for Exponential Distribution
- Chi square problem
- Different results by using ONEWAY ANOVA and univariat multifactor ANOVA
- Assumption: Repeated Measure ANOVA
- Most probable extreme value and sample size
- Average of Averages?
- Is MANOVA what I need, or something else?
- Interpreting an interaction
- Multiple Regression. More of a theory based question
- SPSS - How to make script to produce hundreds of scatterdots MEAN vs Spearman easy?
- Feedback on Graph Desired
- Comparing Percentages
- Two dimensional variant of Kolmogorov-Smirnov test and implementation
- Political Ideology Self Identification vs. GPD and vs. Unemployment %
- variance of the sample variance of a random sample of normal r.vs
- proc reg vs. proc genmod
- Comparision of three cell lines in a rat model
- Deriving the MSE from the mean, SD and N
- which method should I use in this case?
- Lots of help needed!
- Which test can I run? Can I do a paired t-test?
- What sampling method is this?
- How to calculate P value in significance test?
- P-Value
- LogPearson 3 Parameters calculation
- Can a p-value in non-parametric tests (Mann-Whitney and Wilcoxon) be zero?
- How to calculate P-value in this context?
- How to test the normality assumption for a repeated measures ANOVA?
- Difference of means of data associated with confidence intervals
- Statistical independence as prerequisite for Henderson's mixed model equations
- [Analysis of Variance] - Repeated-measures ANOVA Questions
- moderating analysis in spss
- Very simple, yet tricky question about representing data in bar charts, any opinions?
- Use parametric or non-paramtric test based on variances?
- R question/Command to calculate Confidence Interval of a Mean?
- SEM and Bessel's correction
- Use of log-transformed data only if similar variances of log-transformed data?
- Standard deviation of final result which consists of 4 sets of measurements
- Statistics advice
- best test for this non-normal distribution?
- Seek confirmation for robust approach of describing non-parametric data set:confused:
- Basic concept: degrees of freedom
- MANCOVA Question. Please Help!
- questions about transformed data and ranking in t tests
- XTLOGIT - interpreting odds ratio. Am I on the right track??????
- help needed for 1% significance level
- Perhaps a simple ANOVA problem
- Beginner Question - Setting up a predictive model
- Finding z score of skewness and Kurtosis
- Hypothesis Test
- Proc report
- [Analysis of Variance] - Repeated-measures True or False
- HELP!!!! Factor Analysis help needed ASAP
- Statistically significant tests
- when to use the median and when the mean ?
- How to determine whether two datasets of two related variables are different?
- Regression diagnostics with large sample sizes
- how to perform spearman's rank with missing data?
- Time series problem - variance of w mean in an AR(1) process
- Looking for statistical test selection help
- Need Help With Simple Formula Design for Test Usage
- Partial deriviative with respect to standard deviation
- Experimental Design Problem for Engineering
- Exam Question (flawed?)
- Which test do I need - paired binomial data
- Multiplying curves
- Scheirer ray hare test, post hoc - please help!
- Fractional Factorial Design Question
- Comparing spectral reflectance curves - mean and variability (How??) Please!
- The relationship between sample size and MP-test power
- Nonparametric test
- Error in result of numerical trapezoidal integration
- Help writing an equation?
- Is this equivalence exists?
- confused about the class interval
- Latin Hypercube Sampling and Importance Sampling
- How to Get Confidence Intervals for Hospital admission Rates? Asymmetric Intervals?
- Suppose that the first four numbers that where chosen are (3,4,10,11). What is the
- Here is the distribution of the weight at birth for all babies born in the U.S:
- High inter-construct correlation and low VIF?
- what could be the meaning of last term in the correlation equation?
- SAS graph problem and regression diagnostics q
- Parametric testing: Evaluating independence of data pts from environmental sampling
- Correlation analysis, does the position of the decimal point matter?
- Regression for Medical Stats
- A very simple Statistics question
- Which test should I use to analyze meteorological data?
- Calculating 95% confidence interval from mean, SD and number of subjects
- Statistics in layman's terms. Does it exist?
- Two-sample t-test with weighted data
- Can I do correlation analysis with categorical data? If so, how?
- Trying to understand a heat map?
- Power Question
- Uniform distribution question
- Maximum likelihood estimator of a function of a parameter.
- Sig 1 tailed is ,000. What does this mean
- Log-linear model for heart disease?
- Im new to Statistics and in need of some help ?
- Quartile Question
- Multi-category input and continuous output
- Confusion with Spearman rho interpretation
- How to Get Confidence Intervals for Rates?
- Normal Distribution Question Approach
- Question on experimental analysis - and my proposed approach for critique!
- Exponential Family..
- why correltation for multivariate regression is always higher
- confusion on terminology
- comparing two dependent? groups
- Statistical power and sample size
- Mean and Variance
- [SOLVED] Time Series vs Repeated Measures
- Find critical region in Hypothesis Testing - Poisson Distribution
- Stats homework help! Power and Errors
- Coorelation
- MDS Cluster plot
- Randomization didn't work. How to Correct for Baseline difference? ANCOVA?
- Parametric or Nonparametric Correlations for Descriptive Stats Table?
- Sampling Methods
- Sample size for t-test
- Sampling Method and Uncertainty Analysis
- Empirical Mode Decomposition
- question about qq plot and correlations
- correlations
- clustering of data and correlations
- repeated measures? mixed effects?... help please!
- A question about ANCOVA
- Beer
- grofit package model validation
- Symbol in Likelihood ratio test exercise
- t-tests * 6
- general linear model
- Simple question re: correlation?
- Confidenc Interval
- Hypothesis Testing
- Bonferroni correction question
- Comparing two sets of percentages
- relationship between category and dependent variables
- Which topic in statistics can help me?
- Triple interaction general full factorial
- help regarding a book on statistics
- Chi square test
- Calculation MISE for a kernel density estimation
- [SOLVED] Binomial Power
- Adjusted Closing Price on stock sites - independant or not?
- Multiple Standard Deviations
- Ancillarity
- [SOLVED] Expected Value of Order Statistics from Standard Normal Distribution
- Help with ANOVA
- Comparison between modeled and unmodeled results - SAS proc GLM
- Help please!!
- More help please!
- Is it safe to say everything that gives you a coefficient's considered "regression"?
- Help with simple problem!
- Time series problem
- what kind of research design is this?
- Bandwidth selection for kernel density estimation
- simulating a repeated measures ANOVA with mixed linear model analysis
- A little help please...
- Help with multivariate analysis
- Equalitiy of Mean
- Question regarding confidence intervals
- Effect size for Wilcoxon Signed Rank
- P = .999, okay to report?
- Averge and Dispersion
- Help with summing variance from systematic samples
- Likert-type questionnaire analysis
- Sampling Estimates
- MVUE verification
- simple question but quite a few things I could add
- Generalised Estimating Equations with binary logistic response type
- Risk Analysis or Uncertainty Analysis Methods
- Adaptive winner selection from a list of scores
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