# Analyzing Data

### From PsychWiki - A Collaborative Psychology Wiki

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+ | *[[What is the difference between a type I and type II error?]] | ||

+ | *[[What is the difference between floor effects and ceiling effects?]] | ||

+ | *[[How is a linear relationship different from a nonlinear/curvilinear relationship?]] | ||

+ | *[[Are linear relationships helpful or harmful to a study?]] | ||

+ | *[[How is a positive linear relationship different from a negative linear relationship?]] | ||

+ | *[[How does confounding impact the research?]] | ||

+ | *[[How is validity different from reliability?]] | ||

+ | *[[How is a between-subjects ANOVA different from a within-subjects ANOVA?]] | ||

+ | *[[What is the difference between bimodal distribution and unimodal distributions?]] | ||

+ | *[[What are the advantages/disadvantages of secondary data analysis?]] | ||

+ | *[[How is interitem reliability different than interobserver reliability? ]] | ||

+ | *[[How is continuous data different than categorical data?]] | ||

+ | *[[How does variability impact research findings?]] | ||

+ | *[[What is the difference between descriptive statistics and inferential statistics?]] | ||

+ | *[[What are the criticisms of hypothesis testing?]] | ||

+ | *[[How do I calculate a sample size?]] | ||

+ | *[[When do I use univariate analysis?]] | ||

+ | *[[When do I use multivariate analysis?]] | ||

+ | *[[How do I choose the appropriate statistical test for my data?]] | ||

+ | *[[How do I create dummy variables?]] | ||

+ | *[[How do I control for familywise error?]] | ||

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'''General''' | '''General''' | ||

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* [[Descriptive Statistics | What are "Descriptive Statistics"?]] | * [[Descriptive Statistics | What are "Descriptive Statistics"?]] | ||

* [[Inferential Statistics | What are "Inferential Statistics"?]] | * [[Inferential Statistics | What are "Inferential Statistics"?]] | ||

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'''Data Screening''' | '''Data Screening''' | ||

* [[Purpose of Data Screening | What is the purpose of data screening/cleaning?]] | * [[Purpose of Data Screening | What is the purpose of data screening/cleaning?]] | ||

* [[Data cleaning | Tips/tricks for Data cleaning]] | * [[Data cleaning | Tips/tricks for Data cleaning]] | ||

* [[Checking Data Entry]] | * [[Checking Data Entry]] | ||

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'''Missing Values''' | '''Missing Values''' | ||

* [[Missing Values | Why do missing values occur?]] | * [[Missing Values | Why do missing values occur?]] | ||

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* [[Identifying Missing Data | How do I identify if missing values are random or non-random?]] | * [[Identifying Missing Data | How do I identify if missing values are random or non-random?]] | ||

* [[Dealing with Missing Data | How do I deal with missing data?]] | * [[Dealing with Missing Data | How do I deal with missing data?]] | ||

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'''Outliers''' | '''Outliers''' | ||

* [[What are outliers?]] | * [[What are outliers?]] | ||

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* [[Detecting Outliers - Multivariate | How do I detect bivariate and multivariate outliers in my data?]] | * [[Detecting Outliers - Multivariate | How do I detect bivariate and multivariate outliers in my data?]] | ||

* [[Dealing with Outliers | How do I deal with outliers?]] | * [[Dealing with Outliers | How do I deal with outliers?]] | ||

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<span style="font-size:95%; font-weight: bold;">►</span> '''Normality''' <br> | <span style="font-size:95%; font-weight: bold;">►</span> '''Normality''' <br> | ||

* [[What is "normality"?]] <br> | * [[What is "normality"?]] <br> | ||

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* [[How do I deal with non-normality?]] <br> | * [[How do I deal with non-normality?]] <br> | ||

* [[How do I transform variables?]] <br> | * [[How do I transform variables?]] <br> | ||

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*[[What is absolute change?]] | *[[What is absolute change?]] | ||

*[[What is absolute difference?]] | *[[What is absolute difference?]] | ||

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*[[What is a Type I error?]] | *[[What is a Type I error?]] | ||

*[[What is a Type II error?]] | *[[What is a Type II error?]] | ||

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*[[What is bivariate correlation?]] | *[[What is bivariate correlation?]] | ||

*[[What is test-retest reliability?]] | *[[What is test-retest reliability?]] | ||

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*[[What is the latent variable?]] | *[[What is the latent variable?]] | ||

*[[What are ceiling effects?]] | *[[What are ceiling effects?]] | ||

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*[[What is a positive linear relationship?]] | *[[What is a positive linear relationship?]] | ||

*[[What is parsimony?]] | *[[What is parsimony?]] | ||

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*[[What is a selection bias?]] | *[[What is a selection bias?]] | ||

*[[What is a linear relationship?]] | *[[What is a linear relationship?]] | ||

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*[[What is a nonlinear relationship?]] | *[[What is a nonlinear relationship?]] | ||

*[[What is a positive correlation?]] | *[[What is a positive correlation?]] | ||

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*[[What is an ecological fallacy?]] | *[[What is an ecological fallacy?]] | ||

*[[What is inference?]] | *[[What is inference?]] | ||

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*[[What is a representative sample?]] | *[[What is a representative sample?]] | ||

*[[What is a direct relationship?]] | *[[What is a direct relationship?]] | ||

*[[What is confirmation bias?]] | *[[What is confirmation bias?]] | ||

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*[[What is participation bias?]] | *[[What is participation bias?]] | ||

*[[What is raw data?]] | *[[What is raw data?]] | ||

*[[What is a spurious relationship?]] | *[[What is a spurious relationship?]] | ||

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*'''Statistical Tests''' | *'''Statistical Tests''' | ||

- [[Meta-analysis]] <br> | - [[Meta-analysis]] <br> | ||

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*[[What is a one-way ANOVA?]] | *[[What is a one-way ANOVA?]] | ||

*[[What is the difference between one-way analysis of variance and two-way analysis of variance?]] | *[[What is the difference between one-way analysis of variance and two-way analysis of variance?]] | ||

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*'''Other''' | *'''Other''' | ||

- [[What is a scatterplot?]] <br> | - [[What is a scatterplot?]] <br> | ||

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*[[What is a manipulation check?]] | *[[What is a manipulation check?]] | ||

*[[How does one conduct a manipulation check?]] | *[[How does one conduct a manipulation check?]] | ||

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*'''Transforming continuous into categorical variables''' | *'''Transforming continuous into categorical variables''' | ||

- [[Why transform continuous variables into categorical variables?]] <br> | - [[Why transform continuous variables into categorical variables?]] <br> | ||

- [[How to dichotomize variables?]] <br> | - [[How to dichotomize variables?]] <br> | ||

- [[Why cut into thirds or fourths instead of dichotomizing?]] <br> | - [[Why cut into thirds or fourths instead of dichotomizing?]] <br> | ||

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*'''Composites''' | *'''Composites''' | ||

- [[How do I create a composite of items?]] <br> | - [[How do I create a composite of items?]] <br> | ||

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- [[How do I create a composite with items with different scale ranges?]] <br> | - [[How do I create a composite with items with different scale ranges?]] <br> | ||

- [[How do I create a composite with items labeled in opposite directions?]] <br> | - [[How do I create a composite with items labeled in opposite directions?]] <br> | ||

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*[[What is generalizability?]] | *[[What is generalizability?]] | ||

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*[[What are the types of reliability?]] | *[[What are the types of reliability?]] | ||

*[[What are marginal means?]] | *[[What are marginal means?]] | ||

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*[[What are paired-samples t-test?]] | *[[What are paired-samples t-test?]] | ||

*[[What is a between-subjects ANOVA?]] | *[[What is a between-subjects ANOVA?]] | ||

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*[[What is a bimodal distribution?]] | *[[What is a bimodal distribution?]] | ||

*[[What is unimodal?]] | *[[What is unimodal?]] | ||

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*[[What is a confirmatory factor analysis?]] | *[[What is a confirmatory factor analysis?]] | ||

*[[What is a pairwise comparison?]] | *[[What is a pairwise comparison?]] | ||

*[[What is a secondary data analysis?]] | *[[What is a secondary data analysis?]] | ||

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*[[What is a robust procedure?]] | *[[What is a robust procedure?]] | ||

*[[What is best fit line?]] | *[[What is best fit line?]] | ||

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*[[What is Cohen's d?]] | *[[What is Cohen's d?]] | ||

*[[What is inter-item reliability?]] | *[[What is inter-item reliability?]] | ||

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*[[What is left-skewed distribution?]] | *[[What is left-skewed distribution?]] | ||

*[[What is power?]] | *[[What is power?]] | ||

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*[[What is the restriction of range?]] | *[[What is the restriction of range?]] | ||

*[[What is quantitative data?]] | *[[What is quantitative data?]] | ||

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*[[What is regression to the mean?]] | *[[What is regression to the mean?]] | ||

*[[What is a one-way design?]] | *[[What is a one-way design?]] | ||

*[[What is a randomized factorial design?]] | *[[What is a randomized factorial design?]] | ||

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## Revision as of 00:05, 30 April 2012

^{Statistically analyzing and interpreting your collected data}

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