Online Test- University of Groningen at University of Groningen

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Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

Suppose a study finds that hair length has a negative correlation with body weight: People with shorter hair weigh more.. Should you grow your hair to lose weight?

Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

When we are talking about a data set, a variable is___

Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

____ are people, animals, or objects that have had information about them recorded.

Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

When we are talking about a data set, cases are___

Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

For each student of a dataset of 50 collage  students, the gender, current GPA, home address, and major are recorded. Which of the following is a case of the dataset?

Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

A professor has a dataset which records some information about the 40 students in her statistics class. For each student, she records the student’s gender, and their score on the first exam. Gender is a ____ variable.

Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

When we are talking about a data set, a label is____.

Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

You are given a dataset describing 15 different trucks. For each of them, the company which made the truck (make) and the gas mileage (mileage) is recorded. What is the quantitative variable in this study?

What are cases?

What is a label?

Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

What is a variable?

Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

What is a categorical variable?

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Exemplary flashcards for Online Test- University of Groningen at the University of Groningen on StudySmarter:

Online Test- University of Groningen

Suppose a study finds that hair length has a negative correlation with body weight: People with shorter hair weigh more.. Should you grow your hair to lose weight?

No, because correlation doesn't equal causation. Other variables could be affecting this relationship. For example, a person's sex is a third variable. Men typically have shorter hair and weight more.

Online Test- University of Groningen

When we are talking about a data set, a variable is___
A characteristic of a case

Online Test- University of Groningen

____ are people, animals, or objects that have had information about them recorded.
Cases

Online Test- University of Groningen

When we are talking about a data set, cases are___
the objects described by the data set

Online Test- University of Groningen

For each student of a dataset of 50 collage  students, the gender, current GPA, home address, and major are recorded. Which of the following is a case of the dataset?
student

Online Test- University of Groningen

A professor has a dataset which records some information about the 40 students in her statistics class. For each student, she records the student’s gender, and their score on the first exam. Gender is a ____ variable.
Categorical

Online Test- University of Groningen

When we are talking about a data set, a label is____.
a special variable used to distinguish the different cases

Online Test- University of Groningen

You are given a dataset describing 15 different trucks. For each of them, the company which made the truck (make) and the gas mileage (mileage) is recorded. What is the quantitative variable in this study?
mileage

Online Test- University of Groningen

What are cases?
-The objects described by a set of data
-Cases may be customers, companies, subjects in a study, etc.

Online Test- University of Groningen

What is a label?
=A special variable used in some data sets to distinguish the different cases

Online Test- University of Groningen

What is a variable?
A characteristic of a case
-> different cases can have different values of the variables

Online Test- University of Groningen

What is a categorical variable?
A categorical variable places each individual into  a category (e.g. male or female)

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