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Using this sampling technique, requires that the population be divided into groups. These groups are called Strata.
Asking someone to rate one particular thing.
A study that considers individuals over a long period of time.
variables that can be measured numerically.
Data collected by you.
a word of phrase sought over the Internet
Facilitates the storage and retrieval of a wide range of data
A statement or question that your project will answer or discuss.
Can include a decimal, rational numbers –4/67 or 67
a random defined number which provides a measure of scale.
Uses a scale – 1 to 4 for example
can’t be a fraction of a number, a percentage, or have a decimal.
the respondent must choose from a given list of responses. These responses are easily analyzed.
factors in the sampling method that influence the result. – poor question design – interviewer tone and attitude
Used when sampling a fixed percent of the population
This occurs when one type of respondent is overrepresented because groupings of different sizes are polled equally. – Overrepresentation
information that is gathered about an entire population.
Data that is collected over a period of time.
a study that considers individuals from different groups at the same time.
Employs Checkmarks for selection
Can be raw data or cumulative information depicted on a table.
an unintended influence when gathering data from a sample.
data that are only measurable with real numbers
Requires that all selections are equally likely and all combonation of selections are equally likely.
Numbers which can continue forever. ex- Pi
A measured value that can change.
This occurs when surveys are not returned – thereby influencing the results.
data that can be described using whole numbers.
a conclusion that can be made about a population, which is based on a sample.
Samples from which the selected elements cannot be reintroduced into the population.
Respondent uses own words – allows for a wide variety of possibilities that are sometimes difficult to interpret.
Population be divided into groups. A random sample of groups is chosen and then a random sample of members of the chosen group is taken.
Used to store data (textual and numerical) in rows and column called “cells”. Can manipulate this data using formulas
this occurs when the chosen sample does not accurately represent the population.
Population is organized in groups. Groups Examples: Schools, Communities, Companies. A random sample of the groups is chosen. All the members of the groups would be surveyed.
Data collected from other sources.
A visual display use in brainstorming to show relationships → Flow Charts
variables that cannot be described numerically.
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