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Unit 1 Key Terms
Question | Answer |
---|---|
The three measures of central tendency are... | Mean, Median, and Mode |
The three types of random samples are... | Simple, Systematic, and Stratified |
The two types of biased samples are... | Convenience and Voluntary Response |
The two types of samples are... | Random and Biased |
Information gathered from a study, survey, or other means of collection is called... | Data |
Data that can be placed into categories is called... | Qualitative Data |
Data in the form of measurements or numerical values is called... | Quantitative Data |
The large group of which individuals are chosen from to participate in a survey would be called the... | Population |
The group of indiviuals chosen from the population to participate in a survey would be called the... | Sample |
This is a special survey in which all of the units of a population are included. | Census |
A sample chosen without any preference is called... | Random |
A sample chosen with preference where individuals chosen are favored is called... | Biased |
The difference between the greatest and least element is called the... | Range |
The range is a measurement of... | dispersion |
A chart that lists the number of times, or frequency, that each data value appears is called a... | Frequency Table |
A table where values are grouped into classes that contain a range of values is called a... | Grouped Frequency Table |
30% and the 30th percentile mean the same thing: true or false | False |
The number of standard deviations that a value is from the mean is called the... | Z-score |
This allows you to determine the likely range for the true population proportion. | Margin of Error |
When you add up all of the elements in a data set and then divide by the number of elements in the set you are finding the... | Mean |
The element that occurs most often in a data set is called the... | Mode |
The element that is in the middle of a data set is called the... | Median |