Computes a prediction interval for the response variable score of one
randomly selected member from the study population.
For more details, see Section 1.9 of Bonett (2021, Volume 1)
Usage
pi.score(alpha, m, sd, n)
Arguments
- alpha
alpha level for 1-alpha confidence
- m
estimated mean
- sd
estimated standard deviation
- n
sample size
Value
Returns a 1-row matrix. The columns are:
Predicted - predicted score
df - degrees of freedom
LL - lower limit of the prediction interval
UL - upper limit of the prediction interval
References
Bonett DG (2021).
Statistical Methods for Psychologists https://dgbonett.sites.ucsc.edu/.
Examples
pi.score(.05, 24.5, 3.65, 40)
#> Predicted df LL UL
#> 24.5 39 17.02546 31.97454
# Should return:
# Predicted df LL UL
# 24.5 39 17.02546 31.97454