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- 1. Multiple ChoiceThis is a categorical variable.Player's NumberPlayer's time in the gamePlayer's points scoredPlayer's salery
- 2. Multiple ChoiceJames and Phil want to know where students at their school traveled to during spring break. They survey 100 classmates who took a trip during spring break. They then make a spreadsheet that includes location visited, how many nights stayed, mode of transportation, distance from home, and average cost per night for each student's trip. Which of those variables are quantitative?location, nights stayed, distance, average costnights stayed, distance, average costmode of transport, distance, average costlocation, nights stayed, average cost
- 3. Multiple Choice
What are the two kinds of data that we studied?
Qualitative and Quantitative
Real and Imaginary
Rational and Irrational
Formulaic and Algebraic
- 4. Multiple Choice
Which of the following describes a stratified sample?
Divide the population into groups and randomly select some people from each group
Divide the population into groups, randomly select a few groups, and select everyone in those groups
Randomly choose some people from the population
Randomly choose one person from the population and then select every 10th person after that.
- 5. Multiple Choice
Jorge’s score on Exam 1 in his statistics class was at the 64th percentile of the scores for all students. His score falls1.
between the minimum and the first quartile.
between the first quartile and the median.
between the median and the third quartile.
between the third quartile and the maximum.
at the mean score for all students.
- 6. Multiple Choice
When Sam goes to a restaurant, he always tips the server $2 plus 10% of the cost of the meal. If Sam’s distribution of meal costs has a mean of $9 and a standard deviation of $3, what are the mean and standard deviation of the distribution of his tips?
$2.90, $0.30
$2.90, $2.30
$9.00, $3.00
$11.00, $2.00
$2.00, $0.90
- 7. Multiple ChoiceWhich of the following is an example of quantitative data?The color of your carA person's state of residenceA person's Zip CodeA Person's Height
- 8. Multiple ChoiceWhich of the following variables are quantitative?
A. type of car
B. weekly wage
C. plane fares
D. petrol prices
E. breed of dogA, B and CA, B, C and EB, C and DA, B, C and D - 9. Multiple ChoiceThe temperature of the room is decreasing by 4 degrees Celsius.QualitativeQuantitative
- 10. Multiple ChoiceThe mass of the chocolate cake is 250 g.QualitativeQuantitative
- 11. Multiple ChoiceThe clouds are grey and ground is wet.QualitativeQuantitative
- 12. Multiple ChoiceThe leaves on the plant are turning brown.QualitativeQuantitativeBothNeither
- 13. Multiple Choice
A marketing survey compiled data on the number of cars in households. If X = the number of cars in a randomly selected household,and we omit the rare cases of more than 5 cars, then X has the following probability distribution:
What is the probability that a randomly chosen household has at least two cars?0.190.200.390.61 - 14. Multiple ChoiceWhat is the expected value of the number of cars in a randomly selected household?2.50.1671.451
- 15. Multiple ChoiceA dealer in Las Vegas selects 10 cards from a standard deck of 52 cards. Let Y be the number of diamonds in 10 cards selected. Which of the following best describes this setting?Y has a geometric distribution n = 10 and p = 0.25.Y has a binomial distribution with n = 10 and p = 0.25Y has a binomial distribution with n = 10 and p = 0.25, provided the deck is shuffled well.Y has a binomial distribution with n = 10 and p = 0.25, provided that after selecting a card it is replaced in the deck and the deck is shuffled well before the next card is selected.
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