Where Do Data Come From?
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Individuals | Objects described by a set of data (ex. People, animals, things)
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| Variable | Characteristic of an individual (different values for different individuals, not always numerical)
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| Observational Study | Observe individuals and measure variables of interest (does not attempt to influence responses)
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| Response | A variable that measures an outcome or result of a study
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| Purpose of an Observational Study: | Describe some group or situation
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| Sample Surveys | Survey of a group of individuals by studying only some of its members that represent the larger group. (a kind of observational study)
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| Population | Entire group of individuals about which we want information
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| Sample | Part of the population from which we actually collect information (used to draw conclusions about the whole)
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| Census | Sample Survey that attempts to include the entire population in the sample
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| Experiment | Imposes treatment on individuals in order to observe cause and effect.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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