Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
How is a sample related to a population? |
A sample is a subset of a population. |
|
|
Why is a sample used more often than a population? |
It is usually impossible to count the entire population. |
|
|
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. |
|
|
What are the two main branches of statistics? |
The two main branches of statistics are descriptive statistics and inferential statistics. |
|
|
True or False? A statistic is a measure that describes a population characteristic. |
False. A statistic is a measure that describes a sample characteristic. |
|
|
True or False? A population is the collection of some outcomes, responses, measurements, or counts that are of interest |
False. A population is the collection of all outcomes, responses, measurements, or counts that are of interest. |
|
|
Population or Sample? The ages of one person per row in a cinema. |
Sample, because the collection of ages of one person per row is a subset of all people in the cinema.
|
|
|
Population or Sample?
The number of radios in each household in a country. |
Population, because it is a collection of the number of radios for all households in the country.
|
|
|
A survey of 12,092 women in a particular country found that 46.7% received an influenza vaccine for a recent flu season. Identify the population and the sample . |
Population: The immunization status of all women in the country.
Sample: The immunization status of the 12,092 women selected. |
|
|
In a poll, 1,005 men in a country were asked whether they favor or oppose the use of "federal tax dollars to fund medical research using stem cells obtained from human embryos." Among the respondents, 48% said that they were in favor. Identify the population and the sample.
|
Population: All men in the country.
Sample: The 1,005 men selected. |
|
|
The Gallup Organization contacts 2897 undergraduates who attend a university and live in the United States and asks whether or not they had spent more than $200 on food in the last month. Identify the population and the sample. |
Population: Undergraduates who attend a university and live in the United States. Sample: The 2897 undergraduates who attend a university and live in the United States. |
|
|
Determine whether 6 is a parameter or a statistic. Explain your reasoning. In a certain soccer league, 6 of the 14 teams had won more games than they had lost. |
Parameter, because the data set of all 14 teams is a population. |
|
|
Determine whether the given value is a statistic or a parameter. In a study of all 3699 students at a college, it is found that 40 % own a television. |
Parameter because the value is a numerical measurement describing a characteristic of a population. |
|
|
Suppose a survey of 533 women in the United States found that more than 67% are the primary investor in their household. Which is the statistic? Give the best inference. |
Statistic: 67% of women in the sample are the primary investor in their household. Inference: There is an association between U.S. women and being the primary investor in their household. |
