Midterm Review Quiz in Statistics and Probability

Which of the following is NOT an objective of statistics?

• Collecting and organizing data
  

• Analyzing and interpreting data
  

• Making random guesses
  

• Presenting data effectively

A qualitative variable is one that:

• Can be measured numerically
  

• Represents categories or characteristics
  

• Always has a finite number of values
  

• Is used only in scientific experiments

Which of the following is an example of a qualitative variable?

• Height of students
  

• Number of books on a shelf
  

• Eye color of individuals
  

• Temperature in degrees Celsius

A quantitative variable is one that:

• Describes an attribute or characteristic
  

• Cannot be measured numerically
  

• Represents numerical values that can be measured or counted
  

• Is always finite in nature

Which of the following is an example of a quantitative variable?

• Type of car
  

• Gender of a person
  

• Test scores in a mathematics exam
  

• Color of a shirt

Which of the following is an example of a discrete random variable?

• The height of students in a class
  

• The number of cars in a parking lot
  

• The time it takes to complete a race
  

• The weight of a watermelon

Which scenario best represents a continuous random variable?

• The number of students present in a class today
  

• The number of goals scored in a soccer match
  

• The amount of milk in a bottle
  

• The number of books in a library

Which of the following is NOT a measure of central tendency?

• Mean
  

• Median
  

• Mode
  

• Range

Which of the following is an example of probability sampling?

• Convenience sampling

• Purposive sampling
  
  

• Simple random sampling
  

• Voluntary response sampling

A researcher studies online gamers and asks each participant to recommend other gamers to join the study. This method is:

• Quota sampling
  

• Convenience sampling
  

• Snowball sampling
  

• Stratified sampling