hello, taking the mean of a variable that is 5 level 0,25,50,75,100 for specific populations. In this population there are only two people with the exposure so n=2 out of 500 and therefore only they can have a mean variable (variable I taking the mean of is amount of outcome per exposure). using proc means clm I am getting such a large confidence interval for this population while the rest are fine. does this statistically make sense due to how small the population is? it just seems outrageous. CI: (-292.66, 342.66) mean= 25, obs1=0, obs=50. standard dev=35.36 standard error =25
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