Anwser: Tuesday is considered to the best day to send a survey with 10 am - 11 am as the most polular time slot. You can find more information and interesting statistics in our The best time to send out surveys to get the highest responses blog.

Anwser: There is no limit on the number of questions you can have in a survey. But if you have too many questions, you can randomize asking questions to avoid any bias and limit the number of questions per respondent. You can set quotas, use logic and implement block randomization so that a group of respondents get a few questions, and the other set of respondents get different questions. This way you can avoid fatigue.

Anwser: Typically if you get around 400 responses, it is considered a valid survey.

Anwser: We would suggest to go for randomly selecting respondents from your target audience as it would avoid any bias. The open invitation survey such as the ones shared on social media platforms may not get responses with the right sample audience. However, it depends on the requirements and the kind of insights you want to gain.

Anwser: Split the questionnaire into blocks and place the most important questions at the top. You can also randomize the blocks so that each group of respondents gets to answer a different set of questions. Present questions to the respondents based on their previous answers by applying logic so that they get to seeonly those questions that are relevant to them.