Unit 1 Review - Statistics

Of the U.S. adult population, 36% has an allergy. A sample of 1200 randomly selected adults resulted in 33.2% reporting an allergy.

Who is the population?

• 36% has an allergy

• 1200 randomly selected adults

• U.S. adult population

• 33.2% reporting an allergy

Of the U.S. adult population, 36% has an allergy. A sample of 1200 randomly selected adults resulted in 33.2% reporting an allergy.

What is the sample?

• 36% has an allergy

• 1200 randomly selected adults

• U.S. adult population

• 33.2% reporting an allergy

Select 90 students currently enrolled at NCSU and ask how many years they’ve attended the university, how old they are, and if they live on campus.

What is the population?

• 90 students enrolled at NCSU

• how many years they attended the university

• how old they are and if they live on campus

• all students enrolled at NCSU

The average weight of every sixth person entering the mall within a 3-hour period was 146 lb.

What is the sample?

• average weight

• every sixth person

• within a 3-hour period

• every person was 146 lb.

How many basketball players on the team.

• Quantative

• Qualitive

You record the favorite sports team of each student in the classroom.

• Quantitative

• Qualitative

Identify the level of measurement.

The amount of snowfall for the year in St. Louis, Missouri.

• Ratio

• Interval

• Ordinal

• Nominal

Identify the level of measurement.

The temperature at Mount Washington in New Hampshire

• Ratio

• Interval

• Ordinal

• Nominal

Identify the level of measurement.

You ask the class if they are republican, democrat, or independent.

• Ratio

• Interval

• Ordinal

• Nominal

Identify the sampling technique.

You visit the freshman college dorm to interview 50 people on whether or not they like college.

• Cluster

• Random

• Systematic

• Convenience

• Stratified