12.1 Sampling Techniques and Misuses of Statistics
A sample that consists of a random selection of groups or units is called a _______ sample.
cluster
The art and science of gathering, analyzing, and making inferences (predictions) from numerical information obtained in an experiment is called _______.
statistics
When a population is divided into parts, called strata, for the purpose of drawing a sample, the procedure is known as a _____ sampling.
stratified
A subset of a population used by statisticians to make predictions about a population is called a _______.
sample
_____ sampling uses data that are easily or readily obtained.
convience
All items or people of interest in an experiment are collectively called a
population
f a sample is drawn in such a way that each time an item is selected, each item in the population has an equal chance of being drawn, the sample is called a _______ sample.
random
When a sample is obtained by drawing every nth item, the sample is called a _______ sample.
systematic