# Indices of Effect Size

## Documentation for package ‘effectsize’ version 1.0.2

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Package NEWS
- Package README

## Help Pages

A C D E F G H I K L M N O P R S T V W Z misc

## -- A --

arr | Odds Ratios, Risk Ratios and Other Effect Sizes for 2-by-2 Contingency Tables
arr_to_logoddsratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
arr_to_nnt | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
arr_to_oddsratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
arr_to_probs | Convert Between Metrics of Change in Probabilities and Probabilities
arr_to_riskratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities

## -- C --

chisq_to_cohens_w | Convert chi^2 to phi and Other Correlation-like Effect Sizes
chisq_to_cramers_v | Convert chi^2 to phi and Other Correlation-like Effect Sizes
chisq_to_fei | Convert chi^2 to phi and Other Correlation-like Effect Sizes
chisq_to_pearsons_c | Convert chi^2 to phi and Other Correlation-like Effect Sizes
chisq_to_phi | Convert chi^2 to phi and Other Correlation-like Effect Sizes
chisq_to_tschuprows_t | Convert chi^2 to phi and Other Correlation-like Effect Sizes
cles | Cohen's _U_s and Other Common Language Effect Sizes (CLES)
cliffs_delta | Dominance Effect Sizes for Rank Based Differences
cohens_d | Cohen's _d_ and Other Standardized Differences
cohens_f | eta^2 and Other Effect Size for ANOVA
cohens_f_squared | eta^2 and Other Effect Size for ANOVA
cohens_g | Effect Size for Paired Contingency Tables
cohens_h | Odds Ratios, Risk Ratios and Other Effect Sizes for 2-by-2 Contingency Tables
cohens_u1 | Cohen's _U_s and Other Common Language Effect Sizes (CLES)
cohens_u2 | Cohen's _U_s and Other Common Language Effect Sizes (CLES)
cohens_u3 | Cohen's _U_s and Other Common Language Effect Sizes (CLES)
cohens_w | phi and Other Contingency Tables Correlations
cov_pooled | Pooled Indices of (Co)Deviation
cramers_v | phi and Other Contingency Tables Correlations
c_to_w | Convert Between Effect Sizes for Contingency Tables Correlations

## -- D --

diff_to_cles | Convert Standardized Differences to Common Language Effect Sizes
d_to_cles | Convert Standardized Differences to Common Language Effect Sizes
d_to_logoddsratio | Convert Between _d_, _r_, and Odds Ratio
d_to_oddsratio | Convert Between _d_, _r_, and Odds Ratio
d_to_overlap | Convert Standardized Differences to Common Language Effect Sizes
d_to_p_superiority | Convert Standardized Differences to Common Language Effect Sizes
d_to_r | Convert Between _d_, _r_, and Odds Ratio
d_to_u1 | Convert Standardized Differences to Common Language Effect Sizes
d_to_u2 | Convert Standardized Differences to Common Language Effect Sizes
d_to_u3 | Convert Standardized Differences to Common Language Effect Sizes

## -- E --

effectsize | Effect Sizes
effectsize.aov | Effect Sizes
effectsize.BFBayesFactor | Effect Sizes
effectsize.datawizard_crosstab | Effect Sizes
effectsize.datawizard_crosstabs | Effect Sizes
effectsize.datawizard_table | Effect Sizes
effectsize.datawizard_tables | Effect Sizes
effectsize.htest | Effect Sizes
effectsize_API | 'effectsize' API
effectsize_CIs | Confidence (Compatibility) Intervals
effectsize_deprecated | Deprecated / Defunct Functions
effectsize_options | 'effectsize' options
epsilon_squared | eta^2 and Other Effect Size for ANOVA
equivalence_test.effectsize_table | Test Effect Size for Practical Equivalence to the Null
eta2_to_f | Convert Between ANOVA Effect Sizes
eta2_to_f2 | Convert Between ANOVA Effect Sizes
eta_squared | eta^2 and Other Effect Size for ANOVA
eta_squared_posterior | eta^2 and Other Effect Size for ANOVA

## -- F --

f2_to_eta2 | Convert Between ANOVA Effect Sizes
fei | phi and Other Contingency Tables Correlations
fei_to_w | Convert Between Effect Sizes for Contingency Tables Correlations
food_class | Classification of Foods
format.effectsize_table | Methods for '{effectsize}' Tables
format_standardize | Format a Standardized Vector
F_to_d | Convert _t_, _z_, and _F_ to Cohen's _d_ or *partial*-_r_
F_to_epsilon2 | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
F_to_eta2 | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
f_to_eta2 | Convert Between ANOVA Effect Sizes
F_to_eta2_adj | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
F_to_f | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
F_to_f2 | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
F_to_omega2 | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
F_to_r | Convert _t_, _z_, and _F_ to Cohen's _d_ or *partial*-_r_

## -- G --

get_effectsize_label | Checks for a Valid Effect Size Name
get_effectsize_name | Checks for a Valid Effect Size Name
glass_delta | Cohen's _d_ and Other Standardized Differences

## -- H --

hardlyworking | Workers' Salary and Other Information
hedges_g | Cohen's _d_ and Other Standardized Differences

## -- I --

interpret | Generic Function for Interpretation
interpret.effectsize_table | Generic Function for Interpretation
interpret.lavaan | Interpret of CFA / SEM Indices of Goodness of Fit
interpret.numeric | Generic Function for Interpretation
interpret.performance_lavaan | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_agfi | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_bf | Interpret Bayes Factor (BF)
interpret_cfi | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_cohens_d | Interpret Standardized Differences
interpret_cohens_g | Interpret Cohen's _g_
interpret_cramers_v | Interpret Correlation Coefficient
interpret_direction | Interpret Direction
interpret_epsilon_squared | Interpret ANOVA Effect Sizes
interpret_ess | Interpret Bayesian Diagnostic Indices
interpret_eta_squared | Interpret ANOVA Effect Sizes
interpret_fei | Interpret Correlation Coefficient
interpret_gfi | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_glass_delta | Interpret Standardized Differences
interpret_hedges_g | Interpret Standardized Differences
interpret_icc | Interpret Intraclass Correlation Coefficient (ICC)
interpret_ifi | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_kendalls_w | Interpret Kendall's Coefficient of Concordance _W_
interpret_nfi | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_nnfi | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_oddsratio | Interpret Odds Ratio
interpret_omega_squared | Interpret ANOVA Effect Sizes
interpret_p | Interpret _p_-Values
interpret_pd | Interpret Probability of Direction (pd)
interpret_phi | Interpret Correlation Coefficient
interpret_pnfi | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_r | Interpret Correlation Coefficient
interpret_r2 | Interpret Coefficient of Determination (R^2)
interpret_r2_semipartial | Interpret ANOVA Effect Sizes
interpret_rank_biserial | Interpret Correlation Coefficient
interpret_rfi | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_rhat | Interpret Bayesian Diagnostic Indices
interpret_rmsea | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_rope | Interpret Bayesian Posterior Percentage in ROPE.
interpret_srmr | Interpret of CFA / SEM Indices of Goodness of Fit
interpret_vif | Interpret the Variance Inflation Factor (VIF)
is.rules | Create an Interpretation Grid
is_effectsize_name | Checks for a Valid Effect Size Name

## -- K --

kendalls_w | Effect Size for Rank Based ANOVA

## -- L --

logoddsratio_to_arr | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
logoddsratio_to_d | Convert Between _d_, _r_, and Odds Ratio
logoddsratio_to_nnt | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
logoddsratio_to_probs | Convert Between Metrics of Change in Probabilities and Probabilities
logoddsratio_to_r | Convert Between _d_, _r_, and Odds Ratio
logoddsratio_to_riskratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities

## -- M --

mad_pooled | Pooled Indices of (Co)Deviation
mahalanobis_d | Mahalanobis' _D_ (a multivariate Cohen's _d_)
means_ratio | Ratio of Means
Music_preferences | Music Preference by College Major
Music_preferences2 | Music Preference by College Major

## -- N --

nnt | Odds Ratios, Risk Ratios and Other Effect Sizes for 2-by-2 Contingency Tables
nnt_to_arr | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
nnt_to_logoddsratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
nnt_to_oddsratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
nnt_to_probs | Convert Between Metrics of Change in Probabilities and Probabilities
nnt_to_riskratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities

## -- O --

oddsratio | Odds Ratios, Risk Ratios and Other Effect Sizes for 2-by-2 Contingency Tables
oddsratio_to_arr | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
oddsratio_to_d | Convert Between _d_, _r_, and Odds Ratio
oddsratio_to_nnt | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
oddsratio_to_probs | Convert Between Metrics of Change in Probabilities and Probabilities
oddsratio_to_r | Convert Between _d_, _r_, and Odds Ratio
oddsratio_to_riskratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
odds_to_probs | Convert Between Odds and Probabilities
omega_squared | eta^2 and Other Effect Size for ANOVA
oods_to_probs.data.frame | Deprecated / Defunct Functions

## -- P --

pearsons_c | phi and Other Contingency Tables Correlations
phi | phi and Other Contingency Tables Correlations
phi_to_chisq | Convert chi^2 to phi and Other Correlation-like Effect Sizes
plot.effectsize_table | Methods for '{effectsize}' Tables
preferences2025 | Preferences of Poop vs Chocolate
print.effectsize_difference | Methods for '{effectsize}' Tables
print.effectsize_table | Methods for '{effectsize}' Tables
print_html.effectsize_table | Methods for '{effectsize}' Tables
print_md.effectsize_table | Methods for '{effectsize}' Tables
probs_to_odds | Convert Between Odds and Probabilities
probs_to_odds.data.frame | Deprecated / Defunct Functions
p_overlap | Cohen's _U_s and Other Common Language Effect Sizes (CLES)
p_superiority | Cohen's _U_s and Other Common Language Effect Sizes (CLES)

## -- R --

r2_delta | Semi-Partial (Part) Correlation Squared (Delta R^2)
r2_part | Semi-Partial (Part) Correlation Squared (Delta R^2)
r2_semipartial | Semi-Partial (Part) Correlation Squared (Delta R^2)
rank_biserial | Dominance Effect Sizes for Rank Based Differences
rank_epsilon_squared | Effect Size for Rank Based ANOVA
rank_eta_squared | Effect Size for Rank Based ANOVA
rb_to_cles | Convert Standardized Differences to Common Language Effect Sizes
rb_to_p_superiority | Convert Standardized Differences to Common Language Effect Sizes
rb_to_vda | Convert Standardized Differences to Common Language Effect Sizes
rb_to_wmw_odds | Convert Standardized Differences to Common Language Effect Sizes
RCT_table | Fictional Results from a Workers' Randomized Control Trial
repeated_measures_d | Standardized Mean Differences for Repeated Measures
riskratio | Odds Ratios, Risk Ratios and Other Effect Sizes for 2-by-2 Contingency Tables
riskratio_to_arr | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
riskratio_to_logoddsratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
riskratio_to_nnt | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
riskratio_to_oddsratio | Convert Between Odds Ratios, Risk Ratios and Other Metrics of Change in Probabilities
riskratio_to_probs | Convert Between Metrics of Change in Probabilities and Probabilities
rm_d | Standardized Mean Differences for Repeated Measures
rouder2016 | Jeff Rouder's Example Dataset for Repeated Measures
rules | Create an Interpretation Grid
r_to_d | Convert Between _d_, _r_, and Odds Ratio
r_to_logoddsratio | Convert Between _d_, _r_, and Odds Ratio
r_to_oddsratio | Convert Between _d_, _r_, and Odds Ratio

## -- S --

screening_test | Results from 2 Screening Tests
sd_pooled | Pooled Indices of (Co)Deviation
Smoking_FASD | Frequency of FASD for Smoking Mothers

## -- T --

tschuprows_t | phi and Other Contingency Tables Correlations
t_to_d | Convert _t_, _z_, and _F_ to Cohen's _d_ or *partial*-_r_
t_to_epsilon2 | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
t_to_eta2 | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
t_to_eta2_adj | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
t_to_f | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
t_to_f2 | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
t_to_omega2 | Convert _F_ and _t_ Statistics to *partial*-eta^2 and Other ANOVA Effect Sizes
t_to_r | Convert _t_, _z_, and _F_ to Cohen's _d_ or *partial*-_r_
t_to_v | Convert Between Effect Sizes for Contingency Tables Correlations
t_to_w | Convert Between Effect Sizes for Contingency Tables Correlations

## -- V --

vd_a | Cohen's _U_s and Other Common Language Effect Sizes (CLES)
v_to_t | Convert Between Effect Sizes for Contingency Tables Correlations
v_to_w | Convert Between Effect Sizes for Contingency Tables Correlations

## -- W --

wmw_odds | Cohen's _U_s and Other Common Language Effect Sizes (CLES)
w_to_c | Convert Between Effect Sizes for Contingency Tables Correlations
w_to_fei | Convert Between Effect Sizes for Contingency Tables Correlations
w_to_t | Convert Between Effect Sizes for Contingency Tables Correlations
w_to_v | Convert Between Effect Sizes for Contingency Tables Correlations

## -- Z --

z_to_d | Convert _t_, _z_, and _F_ to Cohen's _d_ or *partial*-_r_
z_to_r | Convert _t_, _z_, and _F_ to Cohen's _d_ or *partial*-_r_

## -- misc --

.es_aov_simple | 'effectsize' API
.es_aov_strata | 'effectsize' API
.es_aov_table | 'effectsize' API