r = sigma_signal / sqrt(sigma_signal^2 + sigma_noise^2); equal signal
and noise give r = 1/sqrt(2).
Usage
RetestR(sigma_signal, sigma_noise)
Arguments
- sigma_signal
spread of the underlying ability, >= 0.
- sigma_noise
spread of the measurement noise, >= 0.
References
Morin, D. J. (2016). Probability: For the Enthusiastic
Beginner. Createspace. Eq (6.37).
Examples
RetestR(1, 1)$r
#> [1] 0.7071068
