Many researchers tend to focus on sampling error - this is typically the only kind of error captured by the margin of error reported in surveys - but the Literary Digest fiasco reminds us that we need to consider all sources of error, both random and systematic.
ນັກຄົ້ນຄວ້າຈໍານວນຫຼາຍມີແນວໂນ້ມທີ່ຈະສຸມໃສ່ການເອົາຕົວຢ່າງຜິດພາດ, ໂດຍປົກກະຕິນີ້ແມ່ນຂໍ້ຜິດພາດທີ່ຖືກບັນທຶກໄວ້ໃນຂອບຂອງຂໍ້ຜິດພາດທີ່ໄດ້ລາຍງານໃນການສໍາຫຼວດ - ແຕ່ຄວາມລົ້ມເຫລວຂອງ Literary Digest foresco reminds us that we need to consider all sources of error, both random and systematic.