STAT HW 1.1
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| How is a sample related to a population? | A sample is a subset of a population.
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| What is the difference between a parameter and a statistic? | A parameter is a numerical description of a
population characteristic. A statistic is a numerical description of a sample characteristic.
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| Determine whether the statement is true or false. If it is false, rewrite it as a true statement. A statistic is a measure that describes a population characteristic. | False. A statistic is a measure that describes a sample characteristic.
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| Determine whether the data set is a population or a sample. Explain your reasoning. The number of floors in each building in a city. | Population, because it is a collection of the number of floors for all buildings in the city.
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| Determine whether the data set is a population or a sample. Explain your reasoning. The carbon monoxide levels of of people who escaped a burning building | The data set is a sample because the collection of people is a subset of the people who escaped a burning building.
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| Determine whether the data set is a population or a sample. Explain your reasoning. | The number of floors in each building in a city.
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| Use the Venn diagram to identify the population and the sample. The parties of registered voters who are gun owners The parties of registered voters who are not gun owners | Choose the correct description of the population.
The parties of registered voters
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| Use the Venn diagram to identify the population and the sample. The parties of registered voters who are gun owners The parties of registered voters who are not gun owners | Choose the correct description of the sample.
The parties of registered voters who are gun owners.
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| A survey of 1021 U.S. adults found that 44.7% have a favorable view of Cuba. Identify the population and the sample. Describe the sample data set. What is the population in the given problem? | The responses of all U.S. adults
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| A survey of 1021 U.S. adults found that 44.7% have a favorable view of Cuba. Identify the population and the sample. Describe the sample data set. Identify the sample for the given problem. Choose the correct answer below. | The 1021 U.S. adults selected
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| A survey of 1021 U.S. adults found that 44.7% have a favorable view of Cuba. Identify the population and the sample. Describe the sample data set. Describe the sample data set. Choose the correct answer below. | 44.7 % of the 1021 U.S. adults who have a favorable view of Cuba and 55.3% of the 1021 U.S. adults who do not.
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| Identify the population and the sample. Describe the sample data set. A survey of 141 law firms in a country found that the average hourly billing rate for partners was $639. Identify the population. Choose the correct answer below. | all law firms in the country
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| Identify the population and the sample. Describe the sample data set. A survey of 141 law firms in a country found that the average hourly billing rate for partners was $639. Identify the sample. Choose the correct answer below. | the law firms that were surveyed
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| Identify the population and the sample. Describe the sample data set. A survey of 141 law firms in a country found that the average hourly billing rate for partners was $639. Describe the sample data set. Choose the correct answer below. | The average hourly billing rate for 141 partners of law firms was $639.
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| Determine whether the underlined value is a parameter or a statistic. A study of 6,076 adults in public restrooms found that 23% did not wash their hands before exiting, Is the value a parameter or a statistic? | Statistic
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| Determine whether the underlined number describes a population parameter or a sample statistic. Explain your reasoning. 63 of the 97 passengers aboard an airship survived an explosion. | The number is a population parameter because it is a numerical description of all of the passengers that survived.
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| Determine whether the underlined number describes a population parameter or a sample statistic. A survey of 2208 adults in a country found that 83% think that militant terrorists are a major threat to the well-being of their country. | The number is a sample statistic because it describes the people in a sample, which is a subset of all of the people in the country.
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| Suppose a survey of 593 women in the United States found that 56% are the primary investor in their household. Which part of the survey represents the descriptive branch of statistics? Choose the descriptive statistic in the problem. | 56% of women in the sample are the primary investor in their household.
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| Suppose a survey of 593 women in the United States found that 56% are the primary investor in their household. Which part of the survey represents the descriptive branch of statistics? Choose the best inference from the given information. | There is an association between U.S. women and being the primary investor in their household.
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| Suppose a survey of 985 homeowners found 31% bought flood insurance . Which part of the survey represents the descriptive branch of statistics? Choose the best statement of the descriptive statistic in the problem. | 31% of homeowners in the sample bought flood insurance.
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| Suppose a survey of 985 homeowners found 31% bought flood insurance . Which part of the survey represents the descriptive branch of statistics? Choose the best inference from the given information. | Most homeowners do not buy flood insurance.
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| A study of 889 senior citizens show that those who exercise regularly exhibit less cognitive decline compared to those who don't excersie. A researcher infers cognitive ability increases the more you exercise. What is wrong with this type of reasoning? | The inference may incorrectly imply that exercise
increases a person's cognitive ability. The study shows a slower decline in cognitive ability.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
aarell82