Chapter 1 Section 1: Intro To Statistics

Question 1

Statistics

Answer 1

Is the science of gathering, describing, or analyzing data/ or
Are the actual numerical descriptions of sample data.

Question 2

Variables

Answer 2

A value or characteristic that changes among members of the population.

Question 3

Population

Answer 3

A particular group of interest.

Question 4

Data

Answer 4

The counts, measurements, or observations gathered about a specific variable in a population in order to study it.

Question 5

Parameter

Answer 5

A numerical description of a population characteristic.

Question 6

Sample

Answer 6

A subset of the population from which data are collected.

Question 7

Sample Statistics

Answer 7

Numerical descriptions of sample characteristics.

Question 8

Population versus Sample

Answer 8

Population Sample
Whole group Part of the group
Group we want to know about. Characteristics are called statistics
Characteristics are called parameters Statistics are always known
Parameters are generally unknown. Group we do know about
Parameters are fixed. Statistics change with the sample

Question 9

Descriptive Statistics

Answer 9

Gathers, sorts, summarizes, and displays the data.

Question 10

Inferential Statistics

Answer 10

Involves using descriptive statistics to estimate population parameters.

Question 11

Census

Answer 11

A study on which data are obtained from every member of the population.