Unit 4 Vocabulary Exam

Group we want information about

• Population
• Statistic
• Parameter
• Observational Study

Part of a population we examine to gain information

• Sample Survey
• Sample
• Parameter
• Observational Study

A Value that describes a sample

• Sample Survey
• Open Sample Survey
• Statistic
• Observational Study

A value that describes a population,usually estimated from a statistic

• Sample Survey
• Open Sample Survey
• Closed Sample Survey
• Parameter

Researchers observe subjects and measure variables of interest but do not influence the responses. No treatments are assigned

• Open Sample Survey
• Closed Sample Survey
• Experiment
• Observational Study

A form of observational study in which the researchers use question use questionnaires or interviews to collect information from a sample to learn about the entire population

• Experiment

• Closed Sample Survey

• Sample Survey

• Subject

respondents write comments, essays, other free-response text

• Placebo Effect
• Open Sample Survey
• Experiment
• Subject

respondents choose from a fixed set of options, like yes/no, multple choice, rating scales

• Closed Sample Survey
• Subject
• Placebo Effect
• Single Blind Study

Researchers impose treatment on experimental units in order to study their response

• Experiment
• Placebo Effect
• Single Blind Study
• Double Blind Study

when experimental units are human beings

• Experiment
• Single Blind Study
• Double Blind Study
• Subject