Deck 1: Basic Ideas

Question 1

By visiting homes door-to-door, a municipality surveys all the households in 89randomly-selected neighborhoods to see how residents feel about a proposed propertytax increase. Identify the type of sample that is being used.

A)stratified sample
B)systematic sample
C)cluster sample
D)voluntary response sample

Answer 1

C

Question 2

An electronics manufacturer test every 1000th cell phone to verify that it is functioningproperly. Identify the kind of sample that is being used.

A)systematic sample
B)simple random sample
C)stratified sample
D)cluster sample

Answer 2

A

Question 3

A pollster randomly samples 159 Democrats, 151 Republicans and 16 Independents (allregistered voters)in Metro City and asks each poll participant which mayorial candidatehe or she prefers. Identify the kind of sample that the pollster is using.

A)sample of convenience
B)stratified sample
C)voluntary response sample
D)cluster sample

Answer 3

B

Question 4

Which one of the following data are continuous?

A)the average height of a sample of trees
B)the rankings of the trees, from most numerous to least numerous
C)the number of representatives of each species in the park
D)the number of species of trees in a park

Question 5

Which one of the following data are discrete?

A)the average height of players on the University of Connecticut's women's basketballteam
B)the height of the tallest player on Duke University's men's basketball team
C)the pre-season ranking of Duke University's men's basketball team
D)the average preseason ranking of the University of Connecticut's women'sbasketball team over the past 10 years

Question 6

Determine which of the following describes ordinal data.i. My best friends are Georgia, Amithaba, and Raphael.ii. My favorite numbers are 2, 7 and 13.

A)i only
B)neither i nor ii
C)both i and ii
D)ii only

Question 7

Determine which of the following describes ordinal data.i. In the horse race, Betty's Girl won, Mr. Ed placed, and Wabash showed.ii. In the horse race, I bet on Betty's Girl to win, Mr. Ed to place, and Wabash to show.

A)i only
B)neither i nor ii
C)both i and ii
D)ii only

Question 8

Choose the answer below that best completes the following statement.A ________ is a number that describes a population.

A)summary
B)statistic
C)parameter
D)sample

Question 9

A middle school student passes out leaflets to the adults at a school function. The leafletsask the recipient to indicate whether they believe in anthropogenic global warming. Thebottom of the leaflet indicates that the completed leaflet should be returned to thestudent. Identify the kind of sample that is being used.

A)cluster sample
B)systematic sample
C)sample of convenience
D)stratified sample

Question 10

The names of all 130 students in a professor's class are written on identical slips ofpaper, and the slips are placed into a large glass jar. Then, the professor selects 5 randomslips from the jar. Identify the kind of sample that is being used.

A)simple random sample
B)systematic sample
C)cluster sample
D)sample of convenience

Question 11

Determine which of the following describes quantitative data.i). the name of a chemical sampleii). the mass of a chemical sampleiii). the color of a chemical sample

A)i only
B)ii only
C)i and ii only
D)i, ii, and iii

Question 12

Determine which of the following describes qualitative data.i). the volume of a shipping container, in gallonsii). the name of the material from which the container is madeiii). the shape of the container

A)ii and iii only
B)i and iii only
C)i, ii, and iii
D)i and ii only

Question 13

Determine which of the following describes qualitative data.i). the make of the car with license plate number VNS-862ii). the license plate number VNS-862iii). the number of vehicles whose license plate number begins with "VNS"

A)i and ii only
B)neither i, nor ii, nor iii
C)iii only
D)i only

Question 14

Determine which of the following describes quantitative data.i). the length of an object in feetii). the speed of an object in meters per secondiii). the number of objects that are blue

A)i, ii, and iii
B)i only
C)iii only
D)i and ii only

Question 15

Which one of the following data are continuous?

A)the number of musicians performing in the MP3 file
B)the number of times the file has been downloaded
C)the time remaining for an MP3 music download
D)all of these represent continuous data

Question 16

Determine which of the following describes nominal data.i. Michaelangelo's sells small, medium, large, and jumbo pizzas.ii. Michaelangelo's most-requested toppings are pepperoni, black olives, and mushrooms.

A)ii only
B)neither i nor ii
C)i only
D)both i and ii

Question 17

Choose the answer below that best completes the following statement.A _____________ is a number that describes a sample.

A)parameter
B)population
C)measurement
D)statistic

Question 18

Which of the following sample types should you always regard as unreliable?

A)simple random samples
B)cluster samples
C)stratified samples
D)voluntary response samples

Question 19

Which one of the following data are discrete?

A)the latitude and longitude of the boat's port of departure
B)the latitude and longitude of a boat at sea
C)the number of crew members on the boat
D)the speed of the boat's propeller, in revolutions per minute

Question 20

Determine which of the following describes nominal data.i. My favorite days of the week are Friday, Saturday, and Tuesday.ii. My favorite day of the week is Friday, my second-favorite is Saturday, andthird-favorite is Tuesday.

A)i only
B)ii only
C)neither i nor ii
D)both i and ii

Question 21

An experiment that tends to overestimate or underestimate the true value is said to be______________.

A)flagrant
B)un-randomized
C)randomized
D)biased

Question 22

In an experiment, subjects are put into two categories according to sex, and then eachsubject is randomly assigned a treatment . This is an example of...

A)gender bias
B)randomized blocking
C)confounding
D)observational studies

Question 23

You ask your friends who they plan to vote for in the next congressional election. Based on theirresponses, you conclude that the candidate you favor cannot lose!This is most likely an example of ...

A)voluntary response bias
B)sampling bias
C)randomized sampling
D)self-interest bias

Question 24

People are reluctant to admit to behavior that may reflect negatively on them. This canlead to ...

A)sampling bias
B)social acceptability bias
C)voluntary response bias
D)hurt feelings

Question 25

In a randomized experiment, if there are large differences in outcomes among thetreatment groups, we can conclude that the differences are due to_____________________.

A)deliberate data manipulation
B)experimental error
C)random luck
D)the treatments

Question 26

When rolling two six-sided dice, your total roll ranges from 2 (double ones)to 12(double sixes).Characterize the nature of the roll total.

A)qualitative and discrete
B)quantitative and continuous
C)quantitative and discrete
D)qualitative and continuous

Question 27

When experimental units are people, they are sometimes called ________________.

A)human units
B)personnel
C)subjects
D)topics

Question 28

Which of the following is the best description of a randomized experiment?

A)an experiment in which the outcomes are random
B)an experiment in which the investigators are chosen at random
C)an experiment in which the experimental units are selected at random
D)an experiment in which the treatments are assigned randomly to experimental units

Question 29

A(n)_______________ makes it difficult to determine whether an experimentaloutcome is due to the applied treatment.

A)perplexer
B)uncooperative subject
C)error
D)counfounder

Question 30

In an experiment, the ______________ is what is measured on each experimental unit. 23)

A)outcome
B)subject
C)category
D)treatment

Question 31

Which of the following is the best description of a double-blind experiment?

A)an experiment in which neither the investigators nor the subjects know how thetreatments have been assigned
B)an experiment in which the subjects are blindfolded so they cannot see whichtreatment is applied to them
C)an experiment in which neither the investigators nor the subjects know the others'names
D)an experiment in which both the investigators and the subjects are hidden from theothers' views

Question 32

The question..."Do you favor a higher standard of living, even though it produces unclean air and water?"... is an example of ...

A)random sampling
B)framing
C)leading question bias
D)sampling bias