| calcCliffdConfidenceIntervals {reproducer} | R Documentation |
calcCliffdConfidenceIntervals
Description
This functions is a helper function. It assesses the significance one-sided and two-sided statistical of Cliff's d based on its confidence interval. The type of test is determined by the parameter One.Sided.Tests, the direction of one-sided tests is determined by the parameter Positive.MD.
Usage
calcCliffdConfidenceIntervals(
d.value,
d.variance,
d.df,
alpha = 0.05,
alternative = "two.sided"
)
Arguments
d.value |
This is the value of Cliff's d. |
d.variance |
This is the estimated variance of Cliff's d |
d.df |
The degrees of freedom. |
alpha |
This is the alpha level required for the statistical tests (default 0.05) |
alternative |
This defines whether a one-sided test or a two-sided (default) test is required. For a one-sided test use parameter values greater' or 'less' to define whether the d-value should be greater or less than zero. |
Value
The function returns a Boolean variable identifying whether the effect size is significant and the confidence interval bounds.
Author(s)
Barbara Kitchenham and Lech Madeyski
Examples
reproducer:::calcCliffdConfidenceIntervals(d.value=0.5, d.variance=0.04,d.df=18)
# A tibble: 1 x 5
# d.tvalue d.pvalue d.ci.lower d.ci.upper d.sig
# <dbl> <dbl> <dbl> <dbl> <lgl>
#1 2.5 0.0223 0.0479 0.782 TRUE
reproducer:::calcCliffdConfidenceIntervals(
d.value=0.5,d.variance=0.04,d.df=18,alternative='greater')
# A tibble: 1 x 5
# d.tvalue d.pvalue d.ci.lower d.ci.upper d.sig
# <dbl> <dbl> <dbl> <dbl> <lgl>
#1 2.5 0.0112 0.123 1 TRUE
reproducer:::calcCliffdConfidenceIntervals(
d.value=0.2,d.variance=0.04,d.df=18,alternative='greater')
# A tibble: 1 x 3
# d.tvalue d.pvalue d.ci.lower d.ci.upper d.sig
# <dbl> <dbl> <dbl> <dbl> <lgl>
#1 1 0.165 -0.133 1 FALSE
reproducer:::calcCliffdConfidenceIntervals(
d.value=-0.5,d.variance=0.04,d.df=18,alternative='less')
# A tibble: 1 x 5
# d.tvalue d.pvalue d.ci.lower d.ci.upper d.sig
# <dbl> <dbl> <dbl> <dbl> <lgl>
#1 -2.5 0.0112 -1 -0.123 TRUE