Hi there. Okay, let's continue our discussion on maximizing response rates. Acceptable response rates vary by how the survey is administered. For a mail survey, 50% is considered adequate, 60% is good, and 70%, very good. For phone, 62% is a good contact rate, as of 2012, versus 90% in 1997. A 9% completed interview rate in 2012, compared to 36% in 1997. Via email, 40% is the average, 50% is good, and 60% is very good. Online, 30% is average. Face to face 80% to 85% is good. There are many factors that have proven to influence response rates to market research surveys. Some of these include length of the survey, ease of response, for instance supplying a pre-stamped, pre-addressed return envelope for direct mail survey. Putting potentially offensive questions at the end. Previous relationship trust with the market. Clarity and quality of questions. We are going to talk about each of these in this lesson. The length of this survey has been shown to have a direct impact on response rates. It will come as no surprise that the more questions you ask, the fewer respondents who start a survey or questionnaire will complete the full questionnaire. Survey Monkey analyzed response and drop-off rates in aggregate across 100,000 random surveys to understand what drop-off rates look like as the length of the surveys increased. Data suggests that as respondents begin answering a survey, the sharpest increase in drop-off rate occurs with each additional question up to 15 questions. If a respondent is willing to answer 15 questions, our data suggests that the drop-off rates for each incremental question up to 35 questions is lower than for the first 15 questions added to a survey and then abandonment pretty much goes up exponentially from there, as you can see in this graph. So if you're trying to optimize first completed survey responses, definitely try to keep your survey short. The incremental value of each question should be worth the possible drop in response rates. Using skip logic can help shorten a survey. Ease of response has also been shown to have a direct impact on response rates. You want to make sure to give respondents a sufficient amount of time to complete the survey. For online surveys, seven to ten days is sufficient. For mail surveys, provide a self addressed, stamped envelope and allow for transit time. Generally, this leads to an average time of two months because of a time lag for the mail delivery system, return of the completed questionnaire, and data entry. It is general knowledge that most of the returned questionnaires come back in the first week. Provide clear instructions on how to complete and submit the survey when it's administered. Design the survey so it's easy to read and follow. For mail or online surveys, send reminders during the survey period and thank the respondents who have completed the survey while reminding others about the deadline for completing the survey. For online surveys, always provide a link for the survey and send a reminder a day before closing the survey and always offer some sort of incentive for participating. You should also strongly consider putting potentially offensive questions towards the end of your survey, as this also has been shown to have a direct impact on response rates. Your questions should appear in an order that makes sense. Begin surveys with questions that are easy to answer, not overly personal and keep related questions together. Make sure that the order isn't introducing bias into your survey. Make sure your questions are phrased in a conversational manner. Clarify anything that might be vague or confusing, and try to strike a balance between sounding approachable to make sure people understand you and feel comfortable and sounding formal to make sure people take the survey seriously. Okay. We'll stop here and continue the final piece of maximizing response rates through building a level of trust. See you then.