# Statistics Ch 1

### 11 terms by stcrosby

#### Study  only

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### Descriptive Statistics

Numerical, graphical, and tabular methods for organizing and summarizing data

### Population

The entire collection of individuals or measurements about which information is desired

### Sample

A part of the population selected for study

### Categorical Data

Non-numerical individual observations

### Numerical Data

Quantitative individual observations

### Discrete Numerical Data

Possible values are isolated points on the number line

### Continuous Numerical Data

Possible values form an entire interval on the number line

### Bivariate Data

Each observation consists of two or more responses or values

### Frequency Distribution

A table that displays frequencies, and sometimes relative frequencies, for each of the possible values of a categorical variable

### Bar Chart

A graph of a frequency distribution for a categorical data set. Each category is represented by a bar, and the area of the bar is proportional to the corresponding frequency or relative frequency.

### Dotplot

A picture of numerical data in which each observation is represented by a dot on or above a horizontal measurement scale.

Example: