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Under coverage would be if you go to a college and asked a sample of the people who live on the campus, if they prefer being on campus or at home. They're only asking the people who are at campus and not the people at home

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You go to a hockey game and ask the fans if they prefer being at the game in person or watching it at home. The survey is only being asked to the people at the game and not at home.

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You’re at a baseball game and you’re in charge of the the number of teams are playing and you see about 30 teams and when they give the record of the number of teams there’s only 20.

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Only asking people who are at home from 9-5am if they work.

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A company sending out a optional questionnaire if they like there product and their opinion on it.

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A survey of 30 boys were asked if they liked hugs, half of it was anonymous the other half was not. The half that was secretive had a percentage of 78% and the non secretive was 32%.

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Survey asking people if they have printers at home but only asking the people in a single rich neighborhood.

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Sending people a survey but it goes in to their spam so they don’t answer it.

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people choosing not to respond to a survey email.

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Asking people to take a survey through a subscription based magazine and not everyone responds

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For example, a survey question can ask “how amazing was the play you watched today?” And the options are: A-Amazing; B-less Amazing. This can mislead people and cause people to answer something other than what they actually believe. Someone could believe that the play was horrible but less amazing isn’t good enough to describe their dissatisfaction

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If someone made a survey on if tampons and pads should be free and you do the survey at an all boys school obviously the boys are going to have a biased sample.

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Response bias is the tendency of a person to answer questions on a survey untruthfully or misleadingly. For example, they may feel pressure to give answers that are socially acceptable. Here's one: "Are family and peers partly responsible for a substance abuser’s behavior?” There is no middle ground there for most people, and responses will be at the extreme end of whatever options are provided.

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Mrs. Blazek creating this padlet for her students to respond to.

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Giving a survey, and hardly anyone responds to them.