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**Test Bank Latest 5th_ED Elementary Statistics by Ron Larson**

**Sample Chapter No 1 Ch. 1 Introduction to Statistics
1.1 An Overview of Statistics
1 Distinguish Between a Population and a Sample
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Identify the population and the sample.
1) A survey of 1378 American households found that 27% of the households own a computer.
2) When 1094 American households were surveyed, it was found that 67% of them owned two cars.
3) A survey of 2625 elementary school children found that 28% of the children could be classified as obese.
2 Distinguish Between a Parameter and a Statistic
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
4) A recent survey by the alumni of a major university indicated that the average salary of 10,500 of its 175,000
graduates was $95,000.
5) The average salary of all assembly-line employees at a certain car manufacturer is $41,000..
6) A survey of 1162 students was taken from a university with 10,000students.
3 Distinguish Between Descriptive Statistics and Inferential Statistics
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Identify whether the statement describes inferential statistics or descriptive statistics.
7) The average age of the students in a statistics class is 19years.
A) descriptive statistics B) inferential statistics
8) The chances of winning the California Lottery are one chance in twenty-two million.
A) inferential statistics B) descriptive statistics
9) There is a relationship between smoking cigarettes and getting emphysema.
A) inferential statistics B) descriptive statistics
10) From past figures, it is predicted that 19% of the registered voters in California will vote in the June primary.
A) inferential statistics B) descriptive statistics
11) Based on previous clients, a marriage counselor concludes that the majority of marriages that begin with
cohabitation before marriage will result in divorce.
A) inferential statistics B) descriptive statistics
4 Concepts
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
12) Explain the difference between a sample and a population.
13) If you had to do a statistical study, would you use a sample or a population? Why?
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1.2 Data Classification
1 Distinguish Between Qualitative and Quantitative Data
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Determine whether the data are qualitative or quantitative.
1) the colors of automobiles on a used car lot
A) qualitative B) quantitative
2) the number of complaint letters received by the United States Postal Service in a given day
A) quantitative B) qualitative
3) the number of seats in a movie theater
A) quantitative B) qualitative
4) the numbers on the shirts of a girlʹs soccer team
A) qualitative B) quantitative
2 Classify Data with Respect to the Four Levels of Measurement
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Identify the data setʹs level of measurement.
5) hair color of women on a high school tennis team
A) nominal B) ordinal C) interval D) ratio
6) numbers on the shirts of a girlʹs soccer team
A) nominal B) ordinal C) interval D) ratio
7) ages of students in a statistic class
A) ratio B) ordinal C) interval D) nominal
8) temperatures of 12 selected refrigerators
A) interval B) ordinal C) nominal D) ratio
9) number of milligrams of tar in 85 cigarettes
A) ratio B) ordinal C) interval D) nominal
10) number of pages in your statistics book
A) ratio B) ordinal C) interval D) nominal
11) marriage status (married, single, or divorced) of the faculty at the University of Colorado
A) nominal B) ordinal C) interval D) ratio
12) list of 1202 social security numbers
A) nominal B) ordinal C) interval D) ratio
13) the ratings of a movie ranging from ʺpoorʺ to ʺgoodʺ to ʺexcellentʺ
A) ordinal B) nominal C) interval D) ratio
14) the final grades (A, B, C, D, and F) for students in a statistics class
A) ordinal B) nominal C) interval D) ratio
15) the annual salaries for all teachers in California
A) ratio B) ordinal C) interval D) nominal
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16) list of zip codes for Chicago
A) nominal B) ordinal C) interval D) ratio
17) the nationalities listed in a recent survey (for example, Asian, European, or Hispanic).
A) nominal B) ordinal C) interval D) ratio
18) the amounts of fat (in grams) in 52 cookies
A) ratio B) ordinal C) interval D) nominal
19) the years the summer Olympics were held in the United States
A) interval B) ordinal C) nominal D) ratio
20) numbers of touchdowns scored by a major university in five randomly selected games
53124
A) ratio B) ordinal C) interval D) nominal
21) the average daily temperatures (in degrees Fahrenheit) on five randomly selected days
35 24 30 31 34
A) interval B) nominal C) ordinal D) ratio
22) manuscripts rated ʺacceptableʺ or ʺunacceptableʺ
A) ordinal B) nominal C) ratio D) interval
23) the lengths (in minutes) of the top ten movies with respect to ticket sales in 2007
A) ratio B) nominal C) ordinal D) interval
24) the data listed on the horizontal axis in the graph
A) nominal B) interval C) ordinal D) ratio
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25) the data listed on the horizontal axis in the graph
A) ratio B) nominal C) ordinal D) interval
3 Concepts
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
26) Explain the differences between the interval and ratio levels of measurement.
27) Explain why data expressed with the Celsius temperature scale is at the interval level of measurement rather
than the ratio level.
1.3 Data Collection and Experimental Design
1 Decide on Methods of Data Collection
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Decide which method of data collection you would use to collect data for the study. Specify either observational
study, experiment, simulation, or survey.
1) A study where a drug was given to 23 patients and a placebo to another group of 23 patients to determine if the
drug has an effect on a patientʹs illness
A) experiment B) simulation
C) survey D) observational study
2) A study of the salaries of college professors in a particular state
A) survey B) simulation
C) experiment D) observational study
3) A study where a political pollster wishes to determine if his candidate is leading in the polls
A) observational study B) simulation
C) experiment D) survey
4) A study where you would like to determine the chance getting three girls in a family of three children
A) simulation B) survey
C) experiment D) observational study
5) A study to evaluate the success of a new experimental procedure performed on 35 patients at one hospital
A) census B) simulation
C) experiment D) observational study
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2 Identify a Biased Sample
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
6) Explain what bias there is in a study done entirely online.
7) A report sponsored by the California Citrus Commission stated that cholesterol levels can be lowered by
drinking at least one glass of a citrus product each day. Determine if the report is biased.
8) A local newspaper ran a survey by asking, ʺDo you support the deployment of a weapon that could kill
millions of innocent people?ʺ Determine whether the survey question is biased.
3 Identify Sampling Techniques
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Identify the sampling technique used.
9) Thirty-five sophomores, 50 juniors and 37seniors are randomly selected from 538 sophomores, 448juniors and
394 seniors at a certain high school.
A) stratified B) random C) cluster D) convenience E) systematic
10) Every fifth person boarding a plane is searched thoroughly.
A) systematic B) random C) cluster D) convenience E) stratified
11) At a local community college, five statistics classes are randomly selected out of 20 and all of the students from
each class are interviewed.
A) cluster B) random C) convenience D) systematic E) stratified
12) A researcher randomly selects and interviews fifty male and fifty female teachers.
A) stratified B) random C) cluster D) convenience E) systematic
13) A researcher for an airline interviews all of the passengers on five randomly selected flights.
A) cluster B) random C) convenience D) systematic E) stratified
14) A community college student interviews everyone in a statistics class to determine the percentage of students
that own a car.
A) convenience B) random C) cluster D) systematic E) stratified
15) Based on 12,500 responses from 48,000questionnaires sent to its alumni, a major university estimated that the
annual salary of its alumni was $78,500 per year.
A) random B) stratified C) cluster D) convenience E) systematic
16) In a recent television survey, participants were asked to answer ʺyesʺ or ʺnoʺ to the question ʺAre you in favor
of the death penalty?ʺ Six thousand five hundred responded ʺyesʺ while 4100 responded ʺnoʺ. There was a
fifty-cent charge for the call.
A) convenience B) random C) cluster D) stratified E) systematic
17) A lobbyist for a major airspace firm assigns a number to each legislator and then uses a computer to randomly
generate ten numbers. The lobbyist contacts the legislators corresponding to these numbers.
A) random B) convenience C) cluster D) stratified E) systematic
18) To ensure customer satisfaction, every 20th phone call received by customer service will be monitored.
A) systematic B) random C) cluster D) stratified E) convenience
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19) A market researcher randomly selects 200 drivers under 55years of age and 200 drivers over 55years of age.
A) stratified B) random C) cluster D) convenience E) systematic
20) To avoid working late, the quality control manager inspects the last 50 items produced that day.
A) convenience B) random C) cluster D) stratified E) systematic
21) The names of 40 contestants are written on 40 cards. The cards are placed in a bag, and three names are picked
from the bag.
A) random B) stratified C) cluster D) convenience E) systematic
22) A researcher randomly selected 25 of the nationʹs middle schools and interviewed all of the teachers at each
school.
A) cluster B) random C) stratified D) convenience E) systematic
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
23) After a hurricane, a disaster area is divided into 200 equal grids. Thirty of the grids are selected and every
occupied household in the grid is interviewed to help focus relief efforts. Select the numbers of the first five
grids that belong to the cluster sample.
16348 76938 90169 51392 55887 71015 09209 79157
24) There are 750 incoming freshmen attending a university this fall. A researcher wishes to send questionnaires to
a sample of 30 of them to complete regarding their drinking habits. Select the numbers of the first five
freshmen who belong to the simple random sample.
16348 76938 90169 51392 55887 71015 09209 79157
25) A college employs 85 faculty members. Without replacement, select the numbers of the five members who will
serve on the tenure committee next year.
16348 76938 90169 51392 55887 71015 09209 79157
26) Of the 5000 outpatients released from a local hospital in the past year, one hundred were contacted and asked
their opinion on the care they received. Select the first five patients who belong to the simple random sample.
16348 76938 90169 51392 55887 71015 09209 79157
4 Concepts
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
27) Explain the differences between cluster sampling and stratified sampling.
28) Explain the difference between a census and a sampling and describe the advantages and disadvantages of
each.
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Ch. 1 Introduction to Statistics
Answer Key
1.1 An Overview of Statistics
1 Distinguish Between a Population and a Sample
1) population: collection of all American households; sample: collection of 1378American households surveyed
2) population: collection of all American households; sample: collection of 1094American households surveyed
3) population: elementary school children; sample: collection of 2625 elementary school children surveyed.
2 Distinguish Between a Parameter and a Statistic
4) It describes a statistic because the number $95,000is based on a subset of the population.
5) It describes a parameter because the $41,000is based on all the workers at the car manufacturer.
6) It describes a statistic because the number 1162is based on a subset of the population.
3 Distinguish Between Descriptive Statistics and Inferential Statistics
7) A
8) A
9) A
10) A
11) A
4 Concepts
12) A population is the collection of all outcomes, responses, measurements, or counts that are of interest.. A sample is a
subset of a population.
13) A sample would be used. It is usually impractical to obtain all the population data.
1.2 Data Classification
1 Distinguish Between Qualitative and Quantitative Data
1) A
2) A
3) A
4) A
2 Classify Data with Respect to the Four Levels of Measurement
5) A
6) A
7) A
8) A
9) A
10) A
11) A
12) A
13) A
14) A
15) A
16) A
17) A
18) A
19) A
20) A
21) A
22) A
23) A
24) A
25) A
3 Concepts
26) Data at the ratio level are similar to data at the interval level, but with the added property that a zero entry is an
inherent zero (implies ʺnoneʺ). Also, for data at the ratio level a ratio of two data values can be formed so that one data
value can be expressed as a multiple of another.
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27) Such data is at the interval level rather than the ratio level because the temperature of 0°C does not represent a
condition where no heat is present, so it is not an inherent zero as required by the ratio level. Also, ratios of two
temperatures cannot be formed so that one data value is expressed as a multiple of the other. The temperature 2°C is
not twice as warm as 1°C.
1.3 Data Collection and Experimental Design
1 Decide on Methods of Data Collection
1) A
2) A
3) A
4) A
5) A
2 Identify a Biased Sample
6) The study may be biased because it is limited to people with computers.
7) A report sponsored by the citrus industry is much more likely to reach conclusions favorable to the industry.
8) The wording of the question is biased, as it tends to encourage negative responses.
3 Identify Sampling Techniques
9) A
10) A
11) A
12) A
13) A
14) A
15) A
16) A
17) A
18) A
19) A
20) A
21) A
22) A
23) 163, 169, 15, 92, 97
24) 163, 487, 693, 169, 513
25) 16, 34, 69, 38, 13
26) 1634, 3890, 1695, 1392, 1509
4 Concepts
27) In stratified sampling, members of the population are divided into two or more subsets, or strata, that share a similar
characteristic. A sample is then randomly selected from each of the strata. A stratified sample has members from each
segment of the population. In cluster sampling, the population is divided into naturally occurring subgroups, each
having similar characteristics. All of the members in one or more (but not all) of the clusters are then selected. In a
cluster sample, care must be taken to ensure that all clusters have similar characteristics.
28) A census is a count or measure of an entire population, while a sampling is a count or measure of part of a population.
A census provides complete information but is often expensive, difficult, and time consuming to perform especially if
the population is large. A sampling is less expensive and time consuming, however appropriate sampling techniques
must be used to ensure that unbiased data are collected and that the sample is representative of the population. Even
with the best sampling methods, sampling error can occur.
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Test Bank Latest, 5th_ED Elementary Statistics by Ron Larson

Test Bank Latest, 5th_ED Elementary Statistics by Ron Larson