An Overview of Statistics
Levels of Measurement
Data Collection Methods
Random
Sampling Techniques
100
The data from every individual of interest is called:

Population data

100
The four levels of measurement.
Nominal, Ordinal, Interval, Ratio
100
The most appropriate method of data collection: A study of the effect of changing flight patterns on the number of airplane accidents.
What is SIMULATION
100
Data that consists of attributes, labels, or nonnumerical entries.
What is QUALITATIVE DATA
100

A sampling method in which you choose every kth member.

Systematic

200

The data from only some of the individuals of interest is known as:

Sample data

200
Types of music played by a radio station is considered what level of measurement.
What is NOMINAL
200
The most appropriate method of data collection: A study of how fourth graders solve a puzzle.
What is OBSERVATIONAL STUDY
200

What is an example of when undercoverage might occur or what is undercoverage?

Answers may vary

200
Compare and contrast: Cluster Samples vs. Stratified Samples
Cluster Samples: divide the population into groups and select all the members in one or more (but not all) of the clusters. Stratified Samples: the population is divided into two or more subsets that share similar characteristics, a sample is then randomly selected from each strata.
300

Parameter or Statistic: As of January 2007, 44% of the governors of all 50 states in the United States are Republicans

Parameter

300

What level of measurement?

The time that you get home each night from school

Interval

300
Which form of data collection: A study of the ages of the 535 members of the U.S. Congress.
What is SURVEY
300

Data that consists of numbers:

Quantitative

300
The easiest, cheapest and fastest way to sample that leads to the most biased and least representative data. This sample consists of only available members of the population.
What is CONVENIENCE SAMPLE
400
A numerical description of a sample characteristics.
What is a STATISTIC
400

What level of measurement?

The class rankings of Jordan 5th, Hayden 3rd, Quinn 11th

Ordinal

400
A key element of this method of data collection is that a treatment is applied to part of a population and responses are observed.
What is EXPERIMENT
400

When the experimenter or test subject does not know who get the treatment or the placebo.

Double Blind study
400

The count or measure of an entire population. 

What is census

500

Identify the population and the sample: A survey of 1906 households in the United States found that 13% have a high definition of television.

Population: All U.S. households Sample: 1906 U.S. households surveyed.

500

What level of measurement?

The yearly income of the members of the senior class

Ratio

500

List potential pitfalls of a survey. 

nonresponse, truthfulness, faulty recall, hidden bias, vague wording, interviewer influence, voluntary response

500

This happen when a subject gets better but was no given the actual treatment.

The placebo effect

500

Name a ways to conduct a Simple Random Sample.

Random Number Generator Pick Names from a hat Random Number Table

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