Gabriela Schulte It has a margin of error of plus or minus 2.25 percentage points. Go deeper: Biden continues to get good marks on handling the coronavirus. The margin of sampling error is 2.8 percentage points at the 95% confidence level, for results based on the entire sample of adults.
The margin ofisation is 50% of the polled.
( z0 westernize :ARG1 ( z1 margin :quant ( z2 percentage-entity :ARG3-of ( z3 include :ARG2 ( z4 person :ARG1-of ( z5 poll ) ) ) :value 50 ) ) )
(z0 / westernize-01
    :ARG1 (z1 / margin
              :quant (z2 / percentage-entity
                         :ARG3-of (z3 / include-91
                                      :ARG2 (z4 / person
                                                :ARG1-of (z5 / poll-01)))
                         :value 50)))
The margin ofisation is 50 % of the polled .
z0 :ARG1 z1
z2 :value 0
z1 :quant z2
z2 :ARG3-of z3
z3 :ARG2 z4
z4 :ARG1-of z5