Creates a detailed summary of a reliability analysis result. All sections
are shown by default; set individual toggles to FALSE to suppress
specific sections.
Usage
# S3 method for class 'reliability'
summary(
object,
reliability_statistics = TRUE,
item_statistics = TRUE,
inter_item_correlations = TRUE,
item_total_statistics = TRUE,
digits = 3,
...
)Arguments
- object
A
reliabilityresult object- reliability_statistics
Show Cronbach's Alpha and McDonald's Omega statistics? (Default: TRUE)
- item_statistics
Show per-item means and SDs? (Default: TRUE)
- inter_item_correlations
Show inter-item correlation matrix? (Default: TRUE)
- item_total_statistics
Show item-total statistics? (Default: TRUE)
- digits
Number of decimal places (Default: 3)
- ...
Additional arguments (ignored)
See also
reliability for the main analysis function.
Examples
result <- reliability(survey_data, trust_government, trust_media, trust_science)
summary(result)
#>
#> Reliability Analysis Results
#> ----------------------------
#> - Items:
#> trust_government Trust in government (1=none, 5=complete)
#> trust_media Trust in media (1=none, 5=complete)
#> trust_science Trust in science (1=none, 5=complete)
#> - N of Items: 3
#>
#> Reliability Statistics
#> ----------------------------------------
#> Cronbach's Alpha: 0.047
#> Alpha (standardized): 0.048
#> McDonald's Omega: 0.047
#> Omega (standardized): 0.048
#> N of Items: 3
#> N (listwise): 2135
#>
#> Item Statistics
#> ----------------------------------------------------------------------
#> Item Mean Std. Deviation N
#> ----------------------------------------------------------------------
#> trust_government Trust in government ... 2.621 1.162 2135
#> trust_media Trust in media (1=no... 2.430 1.156 2135
#> trust_science Trust in science (1=... 3.624 1.034 2135
#> ----------------------------------------------------------------------
#>
#> Inter-Item Correlation Matrix
#> -----------------------------------------
#> (1) (2) (3)
#> -----------------------------------------
#> (1) trust_government 1.000 0.014 0.020
#> (2) trust_media 0.014 1.000 0.015
#> (3) trust_science 0.020 0.015 1.000
#> -----------------------------------------
#>
#> Item-Total Statistics
#> ------------------------------------------------------------------------
#> Scale Mean Scale Var. Corrected Alpha if Omega if
#> Item if Deleted if Deleted Item-Total Deleted Deleted
#> ------------------------------------------------------------------------
#> trust_government 6.054 2.440 0.024 0.029
#> trust_media 6.245 2.467 0.020 0.040
#> trust_science 5.051 2.723 0.025 0.027
#> ------------------------------------------------------------------------
#> Note: Omega if item deleted requires at least 4 items
#> (a one-factor model on the remaining 2 items is not identified).
summary(result, inter_item_correlations = FALSE)
#>
#> Reliability Analysis Results
#> ----------------------------
#> - Items:
#> trust_government Trust in government (1=none, 5=complete)
#> trust_media Trust in media (1=none, 5=complete)
#> trust_science Trust in science (1=none, 5=complete)
#> - N of Items: 3
#>
#> Reliability Statistics
#> ----------------------------------------
#> Cronbach's Alpha: 0.047
#> Alpha (standardized): 0.048
#> McDonald's Omega: 0.047
#> Omega (standardized): 0.048
#> N of Items: 3
#> N (listwise): 2135
#>
#> Item Statistics
#> ----------------------------------------------------------------------
#> Item Mean Std. Deviation N
#> ----------------------------------------------------------------------
#> trust_government Trust in government ... 2.621 1.162 2135
#> trust_media Trust in media (1=no... 2.430 1.156 2135
#> trust_science Trust in science (1=... 3.624 1.034 2135
#> ----------------------------------------------------------------------
#>
#> Item-Total Statistics
#> ------------------------------------------------------------------------
#> Scale Mean Scale Var. Corrected Alpha if Omega if
#> Item if Deleted if Deleted Item-Total Deleted Deleted
#> ------------------------------------------------------------------------
#> trust_government 6.054 2.440 0.024 0.029
#> trust_media 6.245 2.467 0.020 0.040
#> trust_science 5.051 2.723 0.025 0.027
#> ------------------------------------------------------------------------
#> Note: Omega if item deleted requires at least 4 items
#> (a one-factor model on the remaining 2 items is not identified).