# Statistics 2400 vocab

## 10 terms

### Statistics

is the art and science of designing studies and analyzing the data that those studies produce. its ultimate goal is translating data into knowledge and understanding the world around us. (The art and science of learning from data)

### Descriptive Statistics

refers to methods for summarizing the data. The summaries usually consist of graphs and numbers such as averages and percentages.

### Inferential Statistics

refers to methods of making decisions or predictions about a population, based on data obtained from a sample of that population.

### Population

is the total set of subjects in which we are interested.

### Sample

is the subset of the population for whom we have (or plan to have) data.

### Random Sample

Blind Study- Every object in population has an equal chance of being selected

### Representative Sample

Deliberatly choose a sample to have the same proportions of the population

### Parameter

is a numerical summary of the population

### Statistic

is a mumerical summary of a sample taken from the population

### Quantitative Data

numerical information describing how much, how little, how big, how tall, how fast, etc.

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