Introductory Statistics Practice Terms

What is the definition of statistics

• Numerical summary of a population

• Numerical summary of a sample

• Numerical summary of data

• Numerical summary of numbers

What is the definition of a parameter?

• numerical summary of data points

• Numerical summary of statistics

• Numerical summary of a sample

• numerical summary of a population

Which of the following are descriptive statistics out of the following scenario?

Example scenario: A high school class conducts a study about the correlation between tardiness and grade.

• The class concludes all students who are tardy get lower grades

• The class concludes that within their classroom, high school students who are tardy generally get lower grades.

• The class concludes that their highest scoring students were typically never tardy

• The class concludes that middle schoolers who are tardy do better regarding their grades.

Which of the following would be inferential statistics based on the scenario?

Example scenario: An assisted living home surveys residents with diabetes to conclude whether this affects their eating habits.

• The home concludes that their residents typically eat more sugar if they have diabetes.

• The home concludes that elderly individuals will typically have diabetes more if they eat more sugar.

• The home concludes that their residence have no strong eating habits and the survey is inconclusive.

Which of these are qualitative

• license plate number

• eye color

• Test scores from 1-100

• temperature in Celsius

Which of these are quantitive

• date of birth

• Number of pets in a home

• Favorite color

• states

This level of measurement for a variable is qualitative, name, label, category, with no ranking

• Nominal

• ordinal

• interval

• ratio

This level of measurement for a variable is qualitative, name, label, category, with ranking capabilities

• Nominal

• ordinal

• interval

• Ratio

This level of measurement for a variable is quantitative, ratios of values have meaning, and zero means “none”

• Ratio

• interval

• Ordinal

• Nominal

This level of measurement for a variable is quantitative, differences have meaning, the number zero does not refer to none

• ratio

• interval

• Ordinal

• nominal