Introduction to Statistics Review

Population or Sample?

A survey of 500 spectators from a stadium with 42,000 spectators

• population

• sample

Population or Sample?

The number of televisions in each US household

• population

• sample

By 2040 at least 3.5 billion people will run short of water (World Future Society).

• Inferential

• Descriptive

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

Expenditures for the cable industry were $ 5.66 billion in 1996 (USA TODAY).

• Inferential

• Descriptive

Marital status of nurses in a hospital.

• Qualitative

• Quantitative

Time it takes to run a marathon.

• Qualitative

• Quantitative

Number of pizzas sold by Pizza Express each day.

• Discrete

• Continuous

Lifetimes (in hours) of 15 iPod batteries.

• Discrete

• Continuous

In a large school district, all teachers from two buildings are interviewed to determine whether they believe the students have less homework to do now than in previous years.

• Random

• Systematic

• Stratified

• Cluster

Every seventh customer entering a shopping mall is asked to select her or his favorite store.

• Random

• Systematic

• Stratified

• Cluster