Question
Determine whether the number described is a statistic or a parameter.
The average number of pages for all books in a library is 317.
The average number of pages for all books in a library is 317.
Answers
Answered by
GPT-4o mini
The number described is a parameter.
A parameter refers to a characteristic or measure obtained by using all the data values from a specific population. In this case, "the average number of pages for all books in a library" pertains to all books in that library, making it a parameter.
In contrast, a statistic would involve a characteristic or measure obtained from a sample of the population. Since the average mentioned includes all books in the library, it is classified as a parameter.
A parameter refers to a characteristic or measure obtained by using all the data values from a specific population. In this case, "the average number of pages for all books in a library" pertains to all books in that library, making it a parameter.
In contrast, a statistic would involve a characteristic or measure obtained from a sample of the population. Since the average mentioned includes all books in the library, it is classified as a parameter.
Answer
Identify the kind of sample that is described.
A salary committee for a Midwestern multi-college district selected 3 colleges in their district at random, then polled all employees in those colleges regarding the proposed benefit package.
A salary committee for a Midwestern multi-college district selected 3 colleges in their district at random, then polled all employees in those colleges regarding the proposed benefit package.
Answered by
GPT-4o mini
The kind of sample described is a **cluster sample**.
In a cluster sampling method, the population is divided into groups (or clusters), and then entire clusters are randomly selected for sampling. In this case, the salary committee randomly selected 3 colleges (the clusters) and then surveyed **all employees** within those selected colleges about the proposed benefit package. This approach is distinct from simple random sampling or stratified sampling, since it involves whole clusters rather than individuals from the entire population or strata of the population.
In a cluster sampling method, the population is divided into groups (or clusters), and then entire clusters are randomly selected for sampling. In this case, the salary committee randomly selected 3 colleges (the clusters) and then surveyed **all employees** within those selected colleges about the proposed benefit package. This approach is distinct from simple random sampling or stratified sampling, since it involves whole clusters rather than individuals from the entire population or strata of the population.
Answer
A [blank] is a subset of a [blank] containing the individuals that are actually observed.
Answered by
GPT-4o mini
A **sample** is a subset of a **population** containing the individuals that are actually observed.
Answer
Determine whether the data described are nominal or ordinal.
I ordered a pizza with pepperoni, mushrooms, olives, and onions.
I ordered a pizza with pepperoni, mushrooms, olives, and onions.
Answered by
GPT-4o mini
The data described are **nominal**.
Nominal data refers to categories or names that do not have a specific order or ranking. In your example, the toppings on the pizza (pepperoni, mushrooms, olives, and onions) are simply different categories of pizza toppings without any inherent order or ranking among them.
Nominal data refers to categories or names that do not have a specific order or ranking. In your example, the toppings on the pizza (pepperoni, mushrooms, olives, and onions) are simply different categories of pizza toppings without any inherent order or ranking among them.
Answer
Determine whether the data described are discrete or continuous.
The velocity of a pitched baseball.
The velocity of a pitched baseball.
Answered by
GPT-4o mini
The data described are **continuous**.
Continuous data can take on any value within a given range and can include fractions and decimals. The velocity of a pitched baseball can vary and be measured with great precision, making it continuous, as it can be expressed in a range of values (e.g., 85.5 mph, 90.2 mph, etc.) rather than just whole numbers.
Continuous data can take on any value within a given range and can include fractions and decimals. The velocity of a pitched baseball can vary and be measured with great precision, making it continuous, as it can be expressed in a range of values (e.g., 85.5 mph, 90.2 mph, etc.) rather than just whole numbers.
Answer
According to Wikipedia, the following are the top few selling video games of all time.
Rank 1- Game Title Tetris - Initial Release Year 1984 - Developer Elektronogtechnaia- Copies Sold (Millions) 170.0
Rank 2- Minecraft - Initial Release Year 2011 - Developer Mojang - Copies Sold (Millions) 154.0
Rank 3- Grand Theft Auto V - Initial Release Year 2013 - Developer Rockstar North - Copies Sold (Millions) 100.0
Which of the columns represent qualitative or quantitative variables?
he column Rank represents [blank] variables.
The column Game Title represents [blank] variables.
The column Initial Release Year represents [blank] variables.
The column Developer represents [blank] variables.
The column Copies Sold (millions) represents [blank] variables.
Rank 1- Game Title Tetris - Initial Release Year 1984 - Developer Elektronogtechnaia- Copies Sold (Millions) 170.0
Rank 2- Minecraft - Initial Release Year 2011 - Developer Mojang - Copies Sold (Millions) 154.0
Rank 3- Grand Theft Auto V - Initial Release Year 2013 - Developer Rockstar North - Copies Sold (Millions) 100.0
Which of the columns represent qualitative or quantitative variables?
he column Rank represents [blank] variables.
The column Game Title represents [blank] variables.
The column Initial Release Year represents [blank] variables.
The column Developer represents [blank] variables.
The column Copies Sold (millions) represents [blank] variables.
Answered by
GPT-4o mini
Here's how you can classify each column:
- The column **Rank** represents **qualitative** variables. (Although ranks are often treated as ordinal data, they categorize the games without specific numerical measurement.)
- The column **Game Title** represents **qualitative** variables. (Game titles are categorical in nature.)
- The column **Initial Release Year** represents **quantitative** variables. (This can be considered a ratio level of measurement as it is numerical and represents a specific point in time.)
- The column **Developer** represents **qualitative** variables. (Developers are categories representing names of companies.)
- The column **Copies Sold (Millions)** represents **quantitative** variables. (This is numerical and indicates how many copies were sold, capable of being measured and compared.)
To summarize:
- Rank: **Qualitative**
- Game Title: **Qualitative**
- Initial Release Year: **Quantitative**
- Developer: **Qualitative**
- Copies Sold (Millions): **Quantitative**
- The column **Rank** represents **qualitative** variables. (Although ranks are often treated as ordinal data, they categorize the games without specific numerical measurement.)
- The column **Game Title** represents **qualitative** variables. (Game titles are categorical in nature.)
- The column **Initial Release Year** represents **quantitative** variables. (This can be considered a ratio level of measurement as it is numerical and represents a specific point in time.)
- The column **Developer** represents **qualitative** variables. (Developers are categories representing names of companies.)
- The column **Copies Sold (Millions)** represents **quantitative** variables. (This is numerical and indicates how many copies were sold, capable of being measured and compared.)
To summarize:
- Rank: **Qualitative**
- Game Title: **Qualitative**
- Initial Release Year: **Quantitative**
- Developer: **Qualitative**
- Copies Sold (Millions): **Quantitative**