Illustration
of Sorting
data in R program

**Question 1**. Learning Journal Reflective Comments:

Answer:

First
three days of second week, as usual, I read “learning guide unit
2.” I try to understand the topic, what chapter of reading
assignment, what is discussion topic. And what is assignment about.
Then, I write discussion and post it in the forum.

I
learn the topics of second weeks that are the Sampled Data and
Reading Data into R. Then, I complete the assignment unit 2. The
assignment is quite challenging with many problems to solve by R
program.

The
last part of second week of study is writing journal about daily
activity. After completing the journal, I post it for grading. Fill
out the quiz of unit 2 is part of learning process for second week.

**Question 2**. Vocabulary and R functions

a)
Define the word frequency as it was used in Chapter 2 (include an APA
citation).

Answer:

“A
frequency is the number of times a given datum occurs in a data set”
(Yakir, 2011, p.17)

b) Define the phrase relative frequency as it was used in Chapter 2 (include an APA citation).

Answer:

“A
relative frequency is the fraction of times a value occurs” (Yakir,
2011, p.17)

c) What is the difference between frequency and relative frequency?

Answer:

Frequency
could be said as the rate of occurrence, while relative frequency is
the fraction of how many times a result occurs over the total number
of tries. Relative frequency can be obtained by simple calculation.

Orchid
for illustration only

**Question 3.**More practice with R

a)
Run interactive R and then run this command:

getwd()

Answer:

[1]
"C:/Users/Tanza/Documents"

It
is mean that the output is saving in the document (directory)

b)
Run the following command and paste the output into your learning
journal to demonstrate that you have the file:

ex.1
<- read.csv('ex1.csv')

summary(ex.1)

Answer:

The
output (result) is following:

id sex height

Min.
:1538611 FEMALE:54 Min. :117.0

1st
Qu.:3339583 MALE :46 1st Qu.:158.0

Median
:5105620 Median :171.0

Mean
:5412367 Mean :170.1

3rd
Qu.:7622236 3rd Qu.:180.2

Max.
:9878130 Max. :208.0

Reference

Yakir,
B. 2011. Introduction to Statistical Thinking (With R, Without
Calculus). Retrieved From
https://my.uopeople.edu/pluginfile.php/157314/mod_resource
/content/3/Intro Stat.pdf

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This looks and sounds like some interesting information. You did a great job of putting it together, and it's very well presented. Thanks for sharing it.

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Illustration of Sorting data in R program

MATH 1280 Introduction to Statistics – Learning Journal 2

Delete@

Illustration of Sorting data in R program

Question 1. Learning Journal Reflective Comments:

Answer:

First three days of second week, as usual, I read “learning guide unit 2.” I try to understand the topic, what chapter of reading assignment, what is discussion topic. And what is assignment about. Then, I write discussion and post it in the forum.

I learn the topics of second weeks that are the Sampled Data and Reading Data into R. Then, I complete the assignment unit 2. The assignment is quite challenging with many problems to solve by R program.

The last part of second week of study is writing journal about daily activity. After completing the journal, I post it for grading. Fill out the quiz of unit 2 is part of learning process for second week.

Thank you for your post :)

ReplyDeleteThank you to visit my article:

DeleteMATH 1280 Introduction to Statistics – Learning Journal 2

@

Question 1. Learning Journal Reflective Comments:

Answer:

First three days of second week, as usual, I read “learning guide unit 2.” I try to understand the topic, what chapter of reading assignment, what is discussion topic. And what is assignment about. Then, I write discussion and post it in the forum.

I learn the topics of second weeks that are the Sampled Data and Reading Data into R. Then, I complete the assignment unit 2. The assignment is quite challenging with many problems to solve by R program.

The last part of second week of study is writing journal about daily activity. After completing the journal, I post it for grading. Fill out the quiz of unit 2 is part of learning process for second week.

This looks complicated to me. Math wasn't my strongest subject in school.

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Thank you to visit my article:

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@

Question 2. Vocabulary and R functions

a) Define the word frequency as it was used in Chapter 2 (include an APA citation).

Answer:

“A frequency is the number of times a given datum occurs in a data set” (Yakir, 2011, p.17)

b) Define the phrase relative frequency as it was used in Chapter 2 (include an APA citation).

Answer:

“A relative frequency is the fraction of times a value occurs” (Yakir, 2011, p.17)

c) What is the difference between frequency and relative frequency?

Answer:

Frequency could be said as the rate of occurrence, while relative frequency is the fraction of how many times a result occurs over the total number of tries. Relative frequency can be obtained by simple calculation.

thanks for the comment <3

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DeleteMATH 1280 Introduction to Statistics – Learning Journal 2

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Orchid for illustration only

I passed statistics in college, but don't know how I did it. Never could understand it.

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Question 3. More practice with R

a) Run interactive R and then run this command:

getwd()

Answer:

[1] "C:/Users/Tanza/Documents"

It is mean that the output is saving in the document (directory)

b) Run the following command and paste the output into your learning journal to demonstrate that you have the file:

ex.1 <- read.csv('ex1.csv')

summary(ex.1)

Answer:

The output (result) is following:

id sex height

Min. :1538611 FEMALE:54 Min. :117.0

1st Qu.:3339583 MALE :46 1st Qu.:158.0

Median :5105620 Median :171.0

Mean :5412367 Mean :170.1

3rd Qu.:7622236 3rd Qu.:180.2

Max. :9878130 Max. :208.0