Chapter One Flashcards Preview

Statistics > Chapter One > Flashcards

Flashcards in Chapter One Deck (19):
1

What is Statistics?

The science of collecting, analyzing, and drawing conclusions from data

2

Why Should one Study Statistics?

1. To be informed
2. To make informed judgement
3. To evaluate decisions that affect your life

3

Variability

Is universal, allows us to distinguish between usual and unusual values

4

Population

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

5

Census

Preformed to gather information about the entire population

6

Sample

A subset of the population, selected for study in some prescribed manner.

7

Descriptive Statistics

The method of organizing and summarizing data

8

Inferential Statistics

Involves making generalizations from a sample to a population

9

Variable

Any characteristic whose value may change from individual or object to another.

10

Data

The values for a variable from individual observations

11

Categorical Variables

Qualitative; identifies basic differentiating characteristics of the population

12

Numerical Variables

Quantitative; Observations or measurements take on numerical values

13

Discrete

Isolated points along a number line; usually counts of items

14

Continuous

Variable that can be any value in a given interval, usually measurements of something

15

Univariate

Data that describes a single characteristics of the population

16

Bivariate

Data that describes two characteristics of the population

17

Multivariate

Data that describes more than two characteristics of the population

18

When to use a Bar Graph?

Categorical data

19

When do use a Dotplot?

Small numerical data sets