Question 1

Determine whether the data are qualitative or quantitative.
-the colors of automobiles on a used car lot
A)qualitative
B)quantitative

Accepted Answer

The data concerns the colors of automobiles which is subjective and cannot be measured or expressed numerically, making it a qualitative data type. The data of colors of automobiles on a used car lot is qualitative as colors are non-numerical and cannot be measured quantitatively.

Question 2

Provide an appropriate response.
-If you had to do a statistical study, would you use a sample or a population? Why?

Accepted Answer

A sample would be used. It is usually impractical to obtain all the population data.

Question 3

Identify the population and the sample.
-A survey of 2625 elementary school children found that 28% of the children could be classified as obese.

Accepted Answer

population: elementary school children; sample: collection of 2625 elementary school children surveyed.

Question 4

Identify whether the statement describes inferential statistics or descriptive statistics.
-The average age of the students in a statistics class is 22 years.
A)descriptive statistics
B)inferential statistics

Accepted Answer

This statement is describing a characteristic of a sample (the statistics class) and is not making any generalizations about a larger population. Therefore, it is an example of descriptive statistics. This statement is an example of descriptive statistics because it is only providing information about the average age of a specific group of students without making any inference or assumptions about a larger population.

Question 5

Determine whether the data are qualitative or quantitative.
-the numbers on the shirts of a girlʹs soccer team
A)qualitative
B)quantitative

Accepted Answer

The numbers on the shirts of a girl's soccer team are used to identify or categorize the players, not to measure or count a quantity. Therefore, they are considered qualitative data.

Question 6

Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
-A recent survey by the alumni of a major university indicated that the average salary of 7500 of its 200,000
graduates was $95,000.

Accepted Answer

The answer of Determine whether the numerical value is a...

Question 7

Determine whether the data are qualitative or quantitative.
-the number of complaint letters received by the United States Postal Service in a given day
A)quantitative
B)qualitative

Accepted Answer

The data is numerical and can be counted, making it a quantitative type of data. The data is related to the number of complaint letters received, which is a quantitative measure.

Question 8

Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
-A survey of 1208 students was taken from a university with 20,000 students.

Accepted Answer

The answer of Determine whether the numerical value is a...

Question 9

Determine whether the data set is a population or a sample.
-The age of each employee at a local grocery store
A)population
B)sample

Accepted Answer

The data set includes the age of each employee at a specific location, which means it encompasses the entire group of interest (all employees at that store), making it a population.

Question 10

Identify whether the statement describes inferential statistics or descriptive statistics.
-There is a relationship between smoking cigarettes and getting emphysema.
A)inferential statistics
B)descriptive statistics

Accepted Answer

This statement is describing the relationship between two variables, smoking cigarettes and getting emphysema. Inferential statistics are used to draw conclusions and make predictions about the relationship between variables based on data from a sample. In this case, inferential statistics could be used to determine the strength and significance of the relationship between smoking and emphysema based on data from a sample of individuals. This statement is describing a relationship between two variables, which falls under inferential statistics as it involves making inferences and drawing conclusions about a population based on sample data.

Question 11

Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
-The average salary of all assembly-line employees at a certain car manufacturer is $42,000.

Accepted Answer

The answer of Determine whether the numerical value is a...

Question 12

Determine whether the data set is a population or a sample.
-The age of every fourth person entering a department store
A)sample
B)population

Accepted Answer

This is a sample because it only includes the ages of every fourth person entering the department store, not the ages of all people entering the store.

Question 13

Identify whether the statement describes inferential statistics or descriptive statistics.
-From past figures, it is predicted that 41% of the registered voters in California will vote in the June primary.
A)inferential statistics
B)descriptive statistics

Accepted Answer

This statement is an example of inferential statistics because it makes a prediction about a population (registered voters in California) based on past data.

Question 14

Identify whether the statement describes inferential statistics or descriptive statistics.
-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

Accepted Answer

This statement describes inferential statistics as the counselor is drawing a conclusion about a larger population based on a sample of previous clients. This statement involves a conclusion made about a larger population based on data collected from a smaller sample. Therefore, it is an example of inferential statistics.

Question 15

Identify the population and the sample.
-When 1886 American households were surveyed, it was found that 85% of them owned two cars.

Accepted Answer

The answer of Identify the population and the sample.
-When 1886...

Question 16

Identify the population and the sample.
-A survey of 1782 American households found that 80% of the households own a computer.

Accepted Answer

The answer of Identify the population and the sample.
-A survey...

Question 17

Provide an appropriate response.
-Explain the difference between a sample and a population.

Accepted Answer

The answer of Provide an appropriate response.
-Explain the difference between...

Question 18

Determine whether the data are qualitative or quantitative.
-the number of seats in a movie theater
A)quantitative
B)qualitative

Accepted Answer

The number of seats is a numerical value and can be measured, making it a quantitative data type. The data is a numerical measurement and thus falls under the category of quantitative data.

Question 19

Use the Venn diagram to identify the population and the sample.
-
A)Population: Magazine subscribers; Sample; Magazine subscribers who renew their subscription
B)Population: Magazine subscribers who renew their subscription; Sample: Magazine subscribers

Accepted Answer

The answer of Use the Venn diagram to identify the...

Question 20

Identify whether the statement describes inferential statistics or descriptive statistics.
-The chances of winning the California Lottery are one chance in twenty-two million.
A)inferential statistics
B)descriptive statistics

Accepted Answer

The statement uses probability to make a prediction about an event, which is a characteristic of inferential statistics.

Quiz 1: Introduction to Statistics

Determine whether the data are qualitative or quantitative. -the colors of automobiles on a used car lot

Provide an appropriate response. -If you had to do a statistical study, would you use a sample or a population? Why?

Identify the population and the sample. -A survey of 2625 elementary school children found that 28% of the children could be classified as obese.

Identify whether the statement describes inferential statistics or descriptive statistics. -The average age of the students in a statistics class is 22 years.

Determine whether the data are qualitative or quantitative. -the numbers on the shirts of a girlʹs soccer team

Determine whether the numerical value is a parameter or a statistic. Explain your reasoning. -A recent survey by the alumni of a major university indicated that the average salary of 7500 of its 200,000 graduates was $95,000.

Determine whether the data are qualitative or quantitative. -the number of complaint letters received by the United States Postal Service in a given day

Determine whether the numerical value is a parameter or a statistic. Explain your reasoning. -A survey of 1208 students was taken from a university with 20,000 students.

Determine whether the data set is a population or a sample. -The age of each employee at a local grocery store

Identify whether the statement describes inferential statistics or descriptive statistics. -There is a relationship between smoking cigarettes and getting emphysema.

Determine whether the numerical value is a parameter or a statistic. Explain your reasoning. -The average salary of all assembly-line employees at a certain car manufacturer is $42,000.

Determine whether the data set is a population or a sample. -The age of every fourth person entering a department store

Identify whether the statement describes inferential statistics or descriptive statistics. -From past figures, it is predicted that 41% of the registered voters in California will vote in the June primary.

Identify whether the statement describes inferential statistics or descriptive statistics. -Based on previous clients, a marriage counselor concludes that the majority of marriages that begin with cohabitation before marriage will result in divorce.

Identify the population and the sample. -When 1886 American households were surveyed, it was found that 85% of them owned two cars.

Identify the population and the sample. -A survey of 1782 American households found that 80% of the households own a computer.

Provide an appropriate response. -Explain the difference between a sample and a population.

Determine whether the data are qualitative or quantitative. -the number of seats in a movie theater

Use the Venn diagram to identify the population and the sample. -

Identify whether the statement describes inferential statistics or descriptive statistics. -The chances of winning the California Lottery are one chance in twenty-two million.