## 1. Statistics

### 1.1. Is the science of collecting, organizing and analyzing data, so it can be easily interpreted.

1.1.1. Descriptive or Inferential

## 2. Inferential Statistics

### 2.1. Interprets data, uses probability as a tool to make conclusions, decisions or production.

2.1.1. j

## 3. Descriptive Statistics

### 3.1. Represents data, organized information in a useful way.

3.1.1. Me: Median, Mo: Mod, Std: Standard deviation

## 4. Sample

### 4.1. Subset or a portion of the population

4.1.1. j

## 5. Biased Sample

### 5.1. A biased sample is one in which the method used to create the sample results in samples that are systematically different from the population.

5.1.1. Target population: citizens of Chula Vista & Sample: Obtained by randomly polluting people outside.

## 6. Random Sample

### 6.1. Random sampling is a procedure for sampling from a population in which the selection of a sample unit is based on chance and every element of the population has a known, non-zero probability of being selected.

6.1.1. jj

## 7. Population

### 7.1. All the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.

7.1.1. Sample or Census

## 8. Continuous Variable

### 8.1. Any number with decimals

8.1.1. Time, Height, Weight

## 9. Discrete Variable

### 9.1. All whole numbers

9.1.1. Cars, people, pets

## 10. Quantitative variable

### 10.1. Numerical

10.1.1. Number of students in the class

## 11. Qualitative Variable

### 11.1. Categorical

11.1.1. Gender of persons

## 12. Absolute

### 12.1. Not qualified or diminished in any way; total.

## 13. Frequency

### 13.1. The rate at which something occurs or is repeated over a particular period of time or in a given sample.

13.1.1. J

## 14. Relative Frequency

### 14.1. The number of times that the event occurs during experimental trials, divided by the total number of trials conducted.

14.1.1. J

## 15. Cummulative Relative Frequency

### 15.1. Accumulation of the previous relative frequencies.

15.1.1. J

## 16. Frequency table

### 16.1. Tools used for organizing data

16.1.1. j

## 17. Polygon of Frequency

### 17.1. Graph constructed by using lines to join the midpoints of each interval, or bin.

17.1.1. J

## 18. Histogram

### 18.1. A diagram consisting of rectangles whose area is proportional to the frequency of a variable and whose width is equal to the class interval.

18.1.1. j