Statistics and Probability- Random Variable

Which of the following statements is true?

• A random variable is a quantity having a numerical value for each member of a group, especially one whose values occur according to a frequency distribution.

• A random variable is a quantity having a value for each member of a group, especially one whose values occur according to a frequency distribution.

• A random variable is a quality having a numerical value for each member of a group, especially one whose values occur according to a frequency distribution.

Tags

CCSS.HSS.MD.A.2

Which of the statements refers to discrete random variable?

• A discrete random variable has a number of possible values. 
  

• A discrete random variable has a countable number of possible values. 
  

• A discrete random variable has a measurable number of possible values. 
  

A random variable is defined by a rule that assigns a _______________ to every outcome in a sample space.

• number

• letter

• Event

• probability

State whether the variable is discrete or continuous. Use CAPITAL letters in typing your answer. The speed of a solar car.

State whether the variable is discrete or continuous. Use CAPITAL letters in typing your answer. The number of plates of pizza served by a restaurant each day.

State whether the variable is discrete or continuous. Use CAPITAL letters in typing your answer. The length of the building

If three coins are tossed, which is not a possible value of the random variable for the number of heads?

• 1

• 2

• 3

• 4

Tags

CCSS.6.SP.A.3

What is the sample space suppose two coins are tossed?

• {HH,HT,TH,TT}

• {HH,TT}

• {H,T}

• {HHH,TTT, HHT, HTH, HTT, THH, THT,TTH}

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

• The average distance traveled by a tricycle in a month.

• Height of the students in a section Prudence.

• Number of blue marbles in the box.

• Weight of potatoes in the basket.

Which of the following statement describe a continuous random variable?

• The number of motorcycles owned by a randomly selected household.

• The length of time for the check up in the hospital

• The number of girls taller than 5 feet in a random sample of 6 girls.

• The number of clients of a certain Insurance Company each day.

Tags

CCSS.6.SP.A.3