Stats Topic 0 2021b

All the items under study is known as:

• a population

• a sample

• a parameter

• a statistic

A subgroup that is representative of a population is called

• a category

• population

• sample

• a data

A survey will be given to 100 students randomly selected from the freshmen class at Saigon High School. What is the population?

• the 100 selected students

• all freshmen at Hanoi High School

• all students at Hanoi High School

A survey will be given to 100 students randomly selected from the freshmen class at Saigon High School. What is the sample?

• the 100 selected students

• all freshmen at Hanoi High School

• all students at Hanoi High School

Which of these is an example of a categorical variable?

• the flavor of soft drink ordered by each customer at a fast-food restaurant

• height, measured in inches, for each student in a class

• points scored by each player on a team

A mean is known as a statistic if it is computed from the

• parameter

• population

• sample

Flavors of ice cream indicate which level of measurement?

• Ordinal

• Nominal

• Continous

• Disrete

Instructors classifying the questions as Easy, Difficult, or Impossible indicates which level of measurement?

• Nominal

• Ordinal

• Discrete

• Continous

Age (in years) of art students indicates which level of measurement?

• Nominal

• Ordinal

• Discrete

• Continous

The main purpose of inferential statistics is to:

• Summarize data in a useful and informative manner.

• Estimate a population characteristic based on a sample.

• Determine if the data adequately represents the population.

• Determine if the data adequately represents the population.