The type of error which makes a poll less than 100% accurate is:
Margin of error is the type of error where the amount of random sampling errors are taken into account which makes a poll not to be 100% correct.
As a result of this, when conducting polls, the researchers always make room for margin of error because of the sampling errors which are dependent on the people who are selected to be a part of the sample which influences the result of the poll.
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