A Brief Introduction to Biostatistics

(C. Jardin) #1

95% confidence interval



  • The 95% confidence interval gives an interval of
    values within which there is a 95% chance of
    locating the true population mean 


+1.96
n


1.96
n


X X X

95% chance of finding  within this interval

Standard error
of the sample
mean S.E. X
Free download pdf