Statistics Types of Variables

Which of the following only involves quantitative variables?

• age versus race

• number of siblings versus types of pets

• number of family members vs types of vacation

• years of experience versus amount of money saved

A positive correlation between two variables means...

• that as one variable increases, the other variable also increases

• that as one variable increases, the other variable decreases

• that as one variable decreases, the other variable increases

• the two variables are happy

A negative correlation between two variables means...

• that as one variable increases, the other variable also increases

• that as one variable increases, the other variable decreases

• that as one variable decreases, the other variable also decreases

• the two variables are unhappy

A branch of Mathematics that deals with collecting, organizing, analyzing and interpreting?

• Statistics

• Statestics

• Stetistics

• Staticstics

The number of accidents in a city during 2010 is

• Discrete variable

• Continuous variable

• Qualitative variable

• Constant

A discrete variable...

• is a qualitative variable that characterizes, describes, or names an element of a population

• is a qualitative variable that incorporates an ordered position, or ranking

• a quantitative variable that can assume a countable number of values, in other words, there is a gap between any two values

• a quantitative variable that can assume an uncountable number of values, in other words, it includes every possible value between any two values

Identify the type of random variable: number of books in a library

• Discrete Random Variable

• Continuous Random Variable

Identify the type of random variable: The time it takes for a light bulb to burn out. 

• Discrete random variable

• Continuous random variable

The time it takes for a light bulb to burn out. 

• Discrete random variable

• Continuous random variable

What is a quantitative variable that could have an infinite number of values?

• categorical variable

• qualitative variable

• discrete variable

• continuous variable