Data Classification
Collect information from each member of an entire sampling frame
Census
For budget purposes, a college president needs to know the average salary of faculty of college
Census
The scientist, interviews each member from each of the five randomly chosen neighborhoods throughout a city
Cluster
A random number generator is used to choose five metropolitan areas. Then a biologist collect data from each person in these metropolitan areas.
Cluster sampling
In order to influence the outcome of the study of political strategist and selects the last 50 members to leave to be studied in depth
Convenience sampling
Statistics stuffy interviews the last 50 members to leave
Convenience sampling
Number of languages that various people speak fluently
Discrete
A car wash operator wants to study if he's using a new cleaning product when they do staffing costs
Experimental
Eye colors
Neither
Colors of cats ones by a sample of households
Nominal
Religious prefer specified form a survey
Nominal
A deli car entrepreneur wants to find out the number of cars passing a billboard in a day
Observational
High school class rankings for a graduating class
Ordinal
Letter grades given for a college course
Ordinal
Types of motorcycles in the showroom
Qualitative
Goals scored during a soccer game
Quantitative
The heartbeat per minute of 40 randomly selected people
Quantitative discrete ratio
Weights of newborn babies
Ratio
A market researcher collects information from 100 consumers chosen at random from the US population
Simple Random Sampling
School administrator selects 50 students by randomly selecting names out of the list of all students enrolled
Simple random sampling
In a —- experiment, only the subject does not know whether they have been placed in the control or experimental
Single blind
And market researcher chooses 30 members of this sample frame at random from each class
Stratified sampling
First, the population population is so divided by class then quality assurance analyst uses a random number generator to select five members from each class to study
Stratified sampling
Lengths of time it takes for new light bulbs to burn out are an example of which type of data?
continuous
Time of day a person woke up each day for a year
interval
