Chapter 1-2

Question 1

Statistics

Answer 1

singular: a way of reasoning, along with a collection of tools and methods, designed to help us understand the world
Plural: calculations made from data

Question 2

Data

Answer 2

systematically recorded information, whether numbers or labels, together with its context.

Question 3

Context

Answer 3

tells WHO was measured, WHAT was measured, HOW the data were collected, WHERE the data were collected, and WHEN and WHY the study was preformed

Question 4

Data table

Answer 4

An arrangement of data in which each row represents a case and each column represents a variable

Question 5

Case

Answer 5

an individual about whom or which we have data

Question 6

Population

Answer 6

All the cases we wish to know about

Question 7

Sample

Answer 7

The cases we actually examine in seeking to understand the much larger population

Question 8

Variable

Answer 8

characteristics recorded about each individual

Question 9

Units

Answer 9

tell how each value has been measured as a standard of measurement. Example: dollars, hours, pounds, feet, ect…

Question 10

Categorical Variable (AKA qualitative)

Answer 10

A variable that names categories ( in words or numbers). Example: grade, gender, hair color, race, ect…

Question 11

Quantitative Variable

Answer 11

A variable in which the numbers act as numerical values. THEY ALWAYS HAVE UNITS.