,Ch. 1 Introduction to Statistics
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1.1 An Overview of Statistics
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1 Distinguish Between a Population and a Sample
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SHORT ANSWER. hm h m Write the word or phrase that best completes each statement or answers the
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question.
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Identify the population and the sample.
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1) A survey of 1378 American households found that 27% of the households own a
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computer. hm
2) When 1094 American households were surveyed, it was found that 67% of them owned
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two cars.
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3) A survey of 2625 elementary school children found that 28% of the children could be
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classified as obese.
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2 Distinguish Between a Parameter and a Statistic
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SHORT ANSWER. hm h m Write the word or phrase that best completes each statement or answers the
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question.
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Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
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4) A recent survey by the alumni of a major university indicated that the average salary
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of 10,500 of its 175,000 graduates was $95,000.
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5) The average salary of all assembly -line employees at a certain car manufacturer is
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$41,000..
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6) A survey of 1162 students was taken from a university with 10,000 students.
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3 Distinguish Between Descriptive Statistics and Inferential Statistics
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MULTIPLE CHOICE. hm h m Choose the one alternative that best completes the statement or answers
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the question.
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Identify whether the statement describes inferential statistics or descriptive statistics.
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7) The average age of the students in a statistics class is 19 years.
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A) descriptive statistics B) inferential statistics
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8) The chances of winning the California Lottery are one chance in twenty-two million.
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A) inferential statistics B) descriptive statistics
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9) There is a relationship between smoking cigarettes and getting emphysema.
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A) inferential statistics B) descriptive statistics
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10) From past figures, it is predicted that 19% of the registered voters in California will
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vote in the June primary.
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A) inferential statistics B) descriptive statistics
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11) Based on previous clients, a marriage counselor concludes that the majority of
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Page hm 1
Copyright hm© hm2012 hmPearson
Education, Inc.
, marriages that begin with
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A) inferential statistics hm B) descriptive statistics hm hm
4 Concepts
SHORT ANSWER.
hm h m Write the word or phrase that best completes each statement or answers the
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question.
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Provide an appropriate response.
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12) Explain the difference between a sample and a population.
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13) If you had to do a statistical study, would you use a sample or a population? Why?
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Page hm 2
Copyright hm© hm2012 hmPearson
Education, Inc.
, 1.2 Data Classificationhm
1 h m h m Distinguish Between Qualitative and Quantitative Data
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MULTIPLE CHOICE. hm h m Choose the one alternative that best completes the statement or answers
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the question.
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Determine whether the data are qualitative or quantitative.
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1) the colors of automobiles on a used car lot
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A) qualitative B) quantitative hm
2) the number of complaint letters received by the United States Postal Service in a given
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day
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A) quantitative B) qualitative hm
3) the number of seats in a movie theater
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A) quantitative B) qualitative
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4) the numbers on the shirts of a girlʹs soccer team
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A) qualitative B) quantitative hm
2 h m h m Classify Data with Respect to the Four Levels of Measurement
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MULTIPLE CHOICE. hm h m Choose the one alternative that best completes the statement or answers
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the question.
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Identify the data setʹs level of measurement.
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5) hair color of women on a high school tennis team
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A) nominal B) ordinal C) interval hm hm D) ratio
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6) numbers on the shirts of a girlʹs soccer team
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A) nominal B) ordinal C) interval hm hm D) ratio
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7) ages of students in a statistic class
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A) ratio B) ordinal hm C) interval
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8) temperatures of 12 selected refrigerators hm hm hm hm
A) interval B) ordinal hm C) nominal
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9) number of milligrams of tar in 85 cigarettes
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A) ratio B) ordinal hm C) interval
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10) number of pages in your statistics book
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A) ratio B) ordinal hm C) interval
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11) marriage status (married, single, or divorced) of the faculty at the University of Colorado
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A) nominal B) ordinal C) interval D) ratio hm hm hm
12) list of 1202 social security numbers
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A) nominal B) ordinal hm C) interval
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13) the ratings of a movie ranging from ʺpoorʺ to ʺgoodʺ to ʺexcellentʺ
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A) ordinal B) nominal C) interval D) ratio hm hm hm
14) the final grades (A, B, C, D, and F) for students in a statistics class
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A) ordinal B) nominal C) interval D) ratio hm hm hm
Page hm 3
Copyright hm© hm2012 hmPearson
Education, Inc.
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1.1 An Overview of Statistics
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1 Distinguish Between a Population and a Sample
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SHORT ANSWER. hm h m Write the word or phrase that best completes each statement or answers the
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question.
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Identify the population and the sample.
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1) A survey of 1378 American households found that 27% of the households own a
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computer. hm
2) When 1094 American households were surveyed, it was found that 67% of them owned
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two cars.
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3) A survey of 2625 elementary school children found that 28% of the children could be
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classified as obese.
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2 Distinguish Between a Parameter and a Statistic
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SHORT ANSWER. hm h m Write the word or phrase that best completes each statement or answers the
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question.
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Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
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4) A recent survey by the alumni of a major university indicated that the average salary
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of 10,500 of its 175,000 graduates was $95,000.
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5) The average salary of all assembly -line employees at a certain car manufacturer is
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$41,000..
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6) A survey of 1162 students was taken from a university with 10,000 students.
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3 Distinguish Between Descriptive Statistics and Inferential Statistics
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MULTIPLE CHOICE. hm h m Choose the one alternative that best completes the statement or answers
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the question.
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Identify whether the statement describes inferential statistics or descriptive statistics.
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7) The average age of the students in a statistics class is 19 years.
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A) descriptive statistics B) inferential statistics
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8) The chances of winning the California Lottery are one chance in twenty-two million.
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A) inferential statistics B) descriptive statistics
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9) There is a relationship between smoking cigarettes and getting emphysema.
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A) inferential statistics B) descriptive statistics
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10) From past figures, it is predicted that 19% of the registered voters in California will
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vote in the June primary.
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A) inferential statistics B) descriptive statistics
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11) Based on previous clients, a marriage counselor concludes that the majority of
hm hm hm hm hm hm hm hm hm hm hm
Page hm 1
Copyright hm© hm2012 hmPearson
Education, Inc.
, marriages that begin with
hm hm hm hm h m cohabitation before marriage will result in divorce.
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A) inferential statistics hm B) descriptive statistics hm hm
4 Concepts
SHORT ANSWER.
hm h m Write the word or phrase that best completes each statement or answers the
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question.
hm
Provide an appropriate response.
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12) Explain the difference between a sample and a population.
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13) If you had to do a statistical study, would you use a sample or a population? Why?
hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm
Page hm 2
Copyright hm© hm2012 hmPearson
Education, Inc.
, 1.2 Data Classificationhm
1 h m h m Distinguish Between Qualitative and Quantitative Data
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MULTIPLE CHOICE. hm h m Choose the one alternative that best completes the statement or answers
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the question.
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Determine whether the data are qualitative or quantitative.
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1) the colors of automobiles on a used car lot
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A) qualitative B) quantitative hm
2) the number of complaint letters received by the United States Postal Service in a given
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day
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A) quantitative B) qualitative hm
3) the number of seats in a movie theater
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A) quantitative B) qualitative
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4) the numbers on the shirts of a girlʹs soccer team
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A) qualitative B) quantitative hm
2 h m h m Classify Data with Respect to the Four Levels of Measurement
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MULTIPLE CHOICE. hm h m Choose the one alternative that best completes the statement or answers
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the question.
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Identify the data setʹs level of measurement.
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5) hair color of women on a high school tennis team
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A) nominal B) ordinal C) interval hm hm D) ratio
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6) numbers on the shirts of a girlʹs soccer team
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A) nominal B) ordinal C) interval hm hm D) ratio
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7) ages of students in a statistic class
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A) ratio B) ordinal hm C) interval
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8) temperatures of 12 selected refrigerators hm hm hm hm
A) interval B) ordinal hm C) nominal
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9) number of milligrams of tar in 85 cigarettes
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A) ratio B) ordinal hm C) interval
hm D) nominal
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10) number of pages in your statistics book
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A) ratio B) ordinal hm C) interval
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11) marriage status (married, single, or divorced) of the faculty at the University of Colorado
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A) nominal B) ordinal C) interval D) ratio hm hm hm
12) list of 1202 social security numbers
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A) nominal B) ordinal hm C) interval
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13) the ratings of a movie ranging from ʺpoorʺ to ʺgoodʺ to ʺexcellentʺ
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A) ordinal B) nominal C) interval D) ratio hm hm hm
14) the final grades (A, B, C, D, and F) for students in a statistics class
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A) ordinal B) nominal C) interval D) ratio hm hm hm
Page hm 3
Copyright hm© hm2012 hmPearson
Education, Inc.
