Final answer:
Accurate telephone survey results may be hindered by response bias, incomplete data due to call interruptions, difficulty in reaching a representative sample, and participant non-response.
Step-by-step explanation:
Some practical difficulties involved in getting accurate results from a telephone survey include response bias due to caller ID, where people may choose not to answer calls from unknown numbers, leading to a skewed sample. Another issue is incomplete responses due to interruptions during the phone call, which can result in partial data or non-responses. Moreover, achieving a representative sample can be challenging when not all demographics are equally likely to use landlines or have listed numbers. The non-response of participants, whether it be out of disinterest or privacy concerns, further complicates data collection. Considering these difficulties, estimates drawn from such surveys might not accurately reflect the population.