Statistic And Probablity at Universiti Sultan Zainal Abidin | Flashcards & Summaries

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Lernmaterialien für Statistic and probablity an der Universiti Sultan Zainal Abidin

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TESTE DEIN WISSEN
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.
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Categorical
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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?
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student
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When we are talking about a data set, a label is____.
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a special variable used to distinguish the different cases
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____ are people, animals, or objects that have had information about them recorded.
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Cases
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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?
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mileage 
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When we are talking about a data set, cases are___
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the objects described by the data set
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What does the number "n" represent? 

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The sum of all the numbers following this symbol

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Thinking of density curve shapes, if an instructor gave a test and most students did well, the distribution of grades should be ___ skewed.

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right

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The area under a density curve that is less than Q3 is___%

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25

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What is a variable?
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A characteristic of a case
-> different cases can have different values of the variables
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What is a categorical variable?
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A categorical variable places each individual into  a category (e.g. male or female)
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What is the standard normal distribution?

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The normal distribution N(0,1) with the mean 0 and the standard deviation 1

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Q:
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.
A:
Categorical
Q:
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?
A:
student
Q:
When we are talking about a data set, a label is____.
A:
a special variable used to distinguish the different cases
Q:
____ are people, animals, or objects that have had information about them recorded.
A:
Cases
Q:
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?
A:
mileage 
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Q:
When we are talking about a data set, cases are___
A:
the objects described by the data set
Q:

What does the number "n" represent? 

A:

The sum of all the numbers following this symbol

Q:

Thinking of density curve shapes, if an instructor gave a test and most students did well, the distribution of grades should be ___ skewed.

A:

right

Q:

The area under a density curve that is less than Q3 is___%

A:

25

Q:
What is a variable?
A:
A characteristic of a case
-> different cases can have different values of the variables
Q:
What is a categorical variable?
A:
A categorical variable places each individual into  a category (e.g. male or female)
Q:

What is the standard normal distribution?

A:

The normal distribution N(0,1) with the mean 0 and the standard deviation 1

Statistic and probablity

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