Data Collection Notes

These flashcards cover key concepts related to data collection, sampling methods, and types of inferences.

Data Collection

The process of gathering and measuring information on variables of interest.

Effective Advertisement

An advertisement that leads to a measurable increase in sales or desired outcomes.

Random Sampling

A method of gathering a sample by randomly selecting individuals from a population of interest.

Random Allocation/Assignment

The process of randomly assigning subjects in a sample to different treatment groups.

Population Inference

Making conclusions about a population based on data collected from a sample.

Causal Inference

Drawing conclusions about a cause-and-effect relationship based on data.

SRS (Simple Random Sample)

A type of sampling where each member of the population has an equal chance of being selected.

Systematic Random Sample

A sampling method that selects every nth member from a list or queue.

Stratified Random Sample

A sampling method that involves dividing the population into subgroups and randomly sampling from each.

Cluster Random Sample

A sampling technique where entire groups or clusters are randomly selected.