Statistics Review

Number of pizzas sold by Pizza Express each day. 

• discrete

• continuous

• inferential

• descriptive

Relative humidity levels in operating rooms at local hospitals.

• continuous

• discrete

• inferential

• descriptive

Number of bananas in a bunch at several local supermarkets.

• continuous

• discrete

Lifetimes (in hours) of 15 iPod batteries.

• continuous

• discrete

Weights of the backpacks of first graders on a school bus.

• continuous

• discrete

Number of students each day who make appointments with a math tutor at a local college.

• continuous

• discrete

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

• Descriptive

• Continuous

• Inferential

• Discrete

Nine out of ten on-the-job fatalities are men (Source: USA TODAY Weekend).

• continuous

• descriptive

• inferential

• experimental

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

• descriptive

• inferential

• systematic

• stratified

The median household income for people aged 25–34 is $35,888 (Source: USA TODAY)

• descriptive

• inferential

• experimental

• systematic