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6.6 Analyze Surveys and Samples. Math 1. 6.6 Analyze Surveys and Samples Vocabulary. GPS MM1D3. Students will relate samples to a population. 6.6 Analyze Surveys and Samples Vocabulary. Have you ever thought about the surveys that you have answered? Were the questions fair?
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6.6 Analyze Surveys and Samples Vocabulary • GPS • MM1D3. Students will relate samples to a population.
6.6 Analyze Surveys and Samples Vocabulary • Have you ever thought about the surveys that you have answered? • Were the questions fair? • Why were you picked to take the survey? • There are some important vocabulary that goes along with surveys and how the samples of people are chosen.
6.6 Analyze Surveys and Samples Vocabulary • 1.) What is a survey? • A survey is a study of one or more characteristics of a group. • 2.) The entire group you want information about is called a population.
6.6 Analyze Surveys and Samples Vocabulary • 3.) Do you have to survey the entire population? • NO, a sample can be picked, which is part of a population. • 4.) Can samples be picked fairly? • Yes, in a randomsampleevery member of the population has an equal chance of being selected.
6.6 Analyze Surveys and Samples Vocabulary • There are also other types of samples. • 5.) Stratified random sample – the population is divided into distinct groups, then members are selected at random from each group. • 6.) Systematic sample – a rule is used to select members of the population.
6.6 Analyze Surveys and Samples Vocabulary • 7.) Convenience sample – only members of the population who are easily accessible are selected. • 8.) Do you think a convenience sample is fair YES or NO. Why? • NO, because it is not a fair sample
6.6 Analyze Surveys and Samples Vocabulary • 9.) Self-selected sample – members of the population volunteer. • 10.) Representative sample – accurately reflects the characteristics of a population.
6.6 Analyze Surveys and Samples Vocabulary • 11.) biased sample – sample not representative of the population. • And last but not least… • 12.) A question that encourages a particular response is a biased question.