1. A variable where the information or data can take infinitely many values is
@ Continuous variable
c. Quantitative
b. Discrete variable
d. Qualitative variable
2. Which of the following is continuous random varlable?
a. The cat has 2 eyes
The cat has 4 paws
b. The cat has 2 kittens
d. The cat weights 5.4 kg
3. You decide to collect a bunch of bottles of soft drink and measure the volume of soft drink in
each bottle. Let X be the number of ml of soft drink in each bottle, What type of variable is X?
a. X is a constant
c. X is a discrete random variable
b. X is a Place holder
d. X is a continuous random variable
4. x is the time it takes a chef to cook a specific dish, is a continuous random variable. Why do
think the variable x in the statement becomes continuous?
a. The variable x is continuous because it takes a range of values
b. The variable x is continuous because it takes an integral values.
C. The variable x is continuous because it takes a countable value
d. The variable x is continuous because it takes a specific numerical values
5. Which of the following is NOT a continuous random variable?
a. Amount of water in a pail
c. A person's weight on each birthday
b. A person's height each year
d. Number of cars manufactured in a
factory each day
6. Which of the following best describe variable that can be counted?
a. Categorical
C. Discrete
b. Continuous
d. Ordinal
7. Which of the following is a continuous random variable?
a. Height of sunflower as measured each day
b. Number of gadgets a business sell per day
C. Number of people attending mass every Sunday
d. Number of people eating at the restaurant everyday
8. A drawer has 2 red ties, 3 black ties and 5 blue ties. A tie is picked at random. What is the total number of
possible outcomes?
a. 2
C. 5
b. 3
d. 10
9. Which of the following variable is discrete random variable?
a. Lifetime of a AAA battery
c. Number of goals of a football team
b. The amount of gasoline in a car
d. The time it takes to commute to word
10. You decided to conduct a survey of families with two children. You are interested in counting the
number of girls (out of 2 children) in each family. Is this a random variable?
a. Yes, it is a random variable
c. Maybe
b. No, it is not a random variable
d. Cannot be determine
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Answer:
1.A
2.C
3.A
4.B
5.A
6.D
7.A
8.B
9.D
10.C
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