ci.median1 {statpsych} | R Documentation |
Confidence interval for a single median
Description
Computes a confidence interval for a single population median.
Usage
ci.median1(alpha, y)
Arguments
alpha |
alpha level for 1-alpha confidence |
y |
vector of scores |
Value
Returns a 1-row matrix. The columns are:
Estimate - estimated median
SE - standard error
LL - lower limit of the confidence interval
UL - upper limit of the confidence interval
References
Snedecor GW, Cochran WG (1989). Statistical Methods, 8th edition. ISU University Pres, Ames, Iowa.
Examples
y <- c(30, 20, 15, 10, 10, 60, 20, 25, 20, 30, 10, 5, 50, 40,
20, 10, 0, 20, 50)
ci.median1(.05, y)
# Should return:
# Estimate SE LL UL
# 20 4.270922 10 30
[Package statpsych version 1.5.0 Index]