Page w1
,Ch. 1 w Introduction to Statistics w w
1.1 An Overview of Statistics
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1 Distinguish Between a Population and a Sample
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SHORT ANSWER. Write the word or phrase that best completes each statement or answers
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w the 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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w computer.
2) When 1094 American households were surveyed, it was found that 67% of them owned
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w two cars.a w
3) A survey of 2625 elementary school children found that 28% of the children could be
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w classified as obese. w w
2 Distinguish Between a Parameter and a Statistic
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SHORT ANSWER. Write the word or phrase that best completes each statement or answers
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w the 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
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w salary 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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w $41,000..
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. Choose the one alternative that best completes the statement or answers
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w the question.
w
Page w2
,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 w 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 w 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 w statistics B) descriptive statistics
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10) From past figures, it is predicted that 19% of the registered voters in California will vote
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w in the June primary.
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A) inferential w 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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w marriages that begin with cohabitation before marriage will result in divorce.
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A) inferential w statistics B) descriptive statistics
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4 Concepts
SHORT ANSWER. Write the word or phrase that best completes each statement or answers
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w the question.
w
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 w3
, 1.2 Data Classification w
1 w w Distinguish Between Qualitative and Quantitative Data
w w w w w
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
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w the question.
w
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
w
2) the number of complaint letters received by the United States Postal Service in a given
w w w w w w w w w w w w w w
w day
A) quantitative B) qualitative
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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
w
2 w w Classify Data with Respect to the Four Levels of Measurement
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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
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w the question.
w
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 w C) interval
w D) ratio
w
6) numbers on the shirts of a girlʹs soccer team
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A) nominal B) ordinal w C) interval
w D) ratio
w
7) ages of students in a statistic class
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A) ratio B) ordinal w C) interval
w D) nominal
w
8) temperatures of 12 selected refrigerators w w w w
A) interval B) ordinal w C) nominal
w D) ratio
w
Page w4
,Ch. 1 w Introduction to Statistics w w
1.1 An Overview of Statistics
w w w
1 Distinguish Between a Population and a Sample
w w w w w w
SHORT ANSWER. Write the word or phrase that best completes each statement or answers
w w w w w w w w w w w w w
w the question.
w
Identify the population and the sample.
w w w w w
1) A survey of 1378 American households found that 27% of the households own a
w w w w w w w w w w w w w
w computer.
2) When 1094 American households were surveyed, it was found that 67% of them owned
w w w w w w w w w w w w w
w two cars.a w
3) A survey of 2625 elementary school children found that 28% of the children could be
w w w w w w w w w w w w w w
w classified as obese. w w
2 Distinguish Between a Parameter and a Statistic
w w w w w w
SHORT ANSWER. Write the word or phrase that best completes each statement or answers
w w w w w w w w w w w w w
w the question.
w
Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
w w w w w w w w w w w w w
4) A recent survey by the alumni of a major university indicated that the average
w w w w w w w w w w w w w
w salary of 10,500 of its 175,000 graduates was $95,000.
w w w w w w w w
5) The average salary of all assembly -line employees at a certain car manufacturer is
w w w w w w w w w w w w w
w $41,000..
6) A survey of 1162 students was taken from a university with 10,000 students.
w w w w w w w w w w w w
3 Distinguish Between Descriptive Statistics and Inferential Statistics
w w w w w w
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
w w w w w w w w w w w w
w the question.
w
Page w2
,Identify whether the statement describes inferential statistics or descriptive statistics.
w w w w w w w w w
7) The average age of the students in a statistics class is 19 years.
w w w w w w w w w w w w
A) descriptive w statistics B) inferential statistics
w w
8) The chances of winning the California Lottery are one chance in twenty-two million.
w w w w w w w w w w w w
A) inferential w statistics B) descriptive statistics
w w
9) There is a relationship between smoking cigarettes and getting emphysema.
w w w w w w w w w
A) inferential w statistics B) descriptive statistics
w w
10) From past figures, it is predicted that 19% of the registered voters in California will vote
w w w w w w w w w w w w w w w
w in the June primary.
w w w
A) inferential w statistics B) descriptive statistics
w w
11) Based on previous clients, a marriage counselor concludes that the majority of
w w w w w w w w w w w
w marriages that begin with cohabitation before marriage will result in divorce.
w w w w w w w w w w
A) inferential w statistics B) descriptive statistics
w w
4 Concepts
SHORT ANSWER. Write the word or phrase that best completes each statement or answers
w w w w w w w w w w w w w
w the question.
w
Provide an appropriate response.
w w w
12) Explain the difference between a sample and a population.
w w w w w w w w
13) If you had to do a statistical study, would you use a sample or a population? Why?
w w w w w w w w w w w w w w w w
Page w3
, 1.2 Data Classification w
1 w w Distinguish Between Qualitative and Quantitative Data
w w w w w
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
w w w w w w w w w w w w
w the question.
w
Determine whether the data are qualitative or quantitative.
w w w w w w w
1) the colors of automobiles on a used car lot
w w w w w w w w
A) qualitative B) quantitative
w
2) the number of complaint letters received by the United States Postal Service in a given
w w w w w w w w w w w w w w
w day
A) quantitative B) qualitative
w
3) the number of seats in a movie theater
w w w w w w w
A) quantitative B) qualitative
w
4) the numbers on the shirts of a girlʹs soccer team
w w w w w w w w w
A) qualitative B) quantitative
w
2 w w Classify Data with Respect to the Four Levels of Measurement
w w w w w w w w w
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
w w w w w w w w w w w w
w the question.
w
Identify the data setʹs level of measurement.
w w w w w w
5) hair color of women on a high school tennis team
w w w w w w w w w
A) nominal B) ordinal w C) interval
w D) ratio
w
6) numbers on the shirts of a girlʹs soccer team
w w w w w w w w
A) nominal B) ordinal w C) interval
w D) ratio
w
7) ages of students in a statistic class
w w w w w w
A) ratio B) ordinal w C) interval
w D) nominal
w
8) temperatures of 12 selected refrigerators w w w w
A) interval B) ordinal w C) nominal
w D) ratio
w
Page w4
