Per4-Descriptive Statistics-Chp.6

What is statistics?

• The study of data
• Defining numbers
• Comparing Theory vs. Experimental
• Measuring how far apart two sets of numbers are

A defined collection of individuals or objects about which we want to draw conclusions.

• Population
• Census
• Sample
• Survey

Information about individuals in a population.

• Parameter
• Data
• Statistics
• Cencus

A subset of the population which we want to collect information from. This must be random to avoid a bias result.

• Population
• Census
• Sample
• Survey

A quantity calculated from the data gathered from the sample.

• Parameter
• Data
• Statistics
• Cencus

The collection of information from the whole population.

• Population
• Census
• Sample
• Survey

A numerical quantity measuring some aspect of a population.

• Parameter
• Data
• Statistics
• Cencus

Categorical Variables describe a particular characteristic. The data is divided into categories. Which best shows categorical data?

• Coke
  Salad
  Pizza
• Target
  WalMart
  Sears
• Target
  Taco Bell
  Safeway
• Boy
  Girl
  Cat

A Quantitative Variable has numerical value. The information collected is called what?

• Numbers
• Numerical Data
• Sample Size
• Evidence

A Quantitative Discrete Variable takes exact number values and is often a result of counting. Which best describes discrete variables?

• The score on your last test
• How long it takes to drive to Seattle
• The distance from Salem to Portland
• The number of students in a school