## R Programming Homework Help | Do My R Programming Homework

If you are studying statistics or data analysis, then certainly R programming would be in your curriculum. It is the programming language that is in huge demand. Many students who are assigned the task of the program in this language will find it challenging and end up submitting poor-quality homework as a result of which they lose valuable grades. If you are assigned to work on R programming homework, then you can seek the help of our **R programming homework help **experts. They are available round the clock to offer you the required help. The solutions given by our team will help you secure good grades in the examination.

Our **R programming homework help **experts have years of experience in the subject. You are always welcome to ask us for the best services at the most affordable prices. When you entrust us with your homework, our professionals will provide the ideal solution. We deliver accurate solutions to R programming coursework - Homework, assignments, projects, technical writing, exams & Quizzes. Our Statistics Homework Help Experts can help you with all of your R programming homework help and **R programming assignment help**.

## Students : Do My R programming Homework

R is an open-source programming language that has a catalogue of various statistical and graphical methods. The language will also have machine learning algorithms, time series, linear regression, and statistical interference. The libraries that are available in R are also written in this language. However, for complicated computational tasks, you would need C, C++ and Fortran codes. R is used by many big companies to develop applications.

You can perform data analysis using the R language in a series of steps such as programming, transforming, discovering, modelling and communicating the output. If you are stuck finding the solution for R problems or requirements, our R programming homework help can help you with the best solutions.

**Program**– It is used as a programming tool to write the code.**Transform**– R has a collection of libraries that are designed to be used in data science.**Discover**- You can use this to thoroughly investigate the data filter the hypothesis and analyze the data.**Model**– R has a wide range of tools that allow you to capture the best model for your data.**Communicate**– It will be integrating the code, graphs, and outputs to the report using the R Markdown and Shiny apps and share the result with the world.

## Why Students Use R programming for Statistical Computing and Graphics?

Reasons why students use R programming for statistical computing and graphics:

**Open-source -**R can be downloaded without paying a single penny using a General Public license. There are sources from where you can learn about various concepts in R. There are R packages that are available under this license, and thus can be used for commercial apps.**Run on different platforms -**Distributions of R can be found on various platforms such as Linux, Mac and Windows. You can port the code that is written on one platform to another platform without any hassle. It also supports cross-platform interoperability.**Increase job opportunities -**Learning this language for data scientists is helpful. Having R programming experience will make your profile stand out from others.

## Packages Helpful in Solving R Homework & Assignments

Following are the R packages that are available to be used in data analysis:

**R Packages in R Homework Help**

**DBI - **It is the standard that is used for communication between R and Relational database management systems. Packages that are connected to R will be based on the DBI package.

**ODBC - **You can use the ODBC driver along with the ODBC package to connect R to the database. The RStudio products will come with professional drivers to use with the popular databases.

**RMySQL, RPostgreSQL, RSQLite - **You can read the data from the database using these packages. You can choose the right one that fits you to retrieve data from the database.

**XLConnect, XLSX - **These are the packages in R, which allow you to read and write Microsoft files from the R programming. You can even export the data to the excel sheet with ease.

**Foreign - **You can read the SAS dataset from R. Foreign will help you with the functions which can be used to load files from different programs to R.

**Haven - **It allows you to read as well as write data from SPSS, SAS and STATA with ease.

**Data manipulation in R Programming Homework Help**

**Tidyverse - **It has a collection of R packages that work well with data science to share philosophy, grammar, and data structures. The collection has various packages, with data import, tidying and visualization.

**Dplyr - **It has all the shortcuts that allow you subset, submit, rearrange, and join the datasets together. It is the package that is best to be used for data manipulation

**Tidyr - **It has various tools that allow you to change the layout of datasets. The spread and gather functions can be used to convert data into a tidy format.

#### Data visualization **in R Programming Homework Help**

**Ggplot2 - **It is the most famous R package that is used for making beautiful graphics. You can use the grammar of graphics to layer and customize the plots.

**Ggvis - **It allows you to use interactive and web-based graphics that are built with the help of the grammar of graphics.

**Data Modeling in R Programming Homework Help**

**Tidymodels - **It has a collection of packages that are used for modelling and machine learning with the help of tidyverse principles.

**Car - **The Anova function in this package allows you to use type II and type II ANOVA tables.

Reporting results

**Shiny - **It is used to make highly interactive apps and is an ideal way to explore data and share information with non-programmers.

Some of the popular topics in R Programming on which our programming assignment experts work on a daily basis are listed below:

Machine and Deep Learning in R | Lists and Data Frames |

Functional Programming | Probability Distributions |

Applied Statistics with R | Grouping, Loops, and Conditionals |

Manipulation of Vectors | User-Defined Functions |

Objects, Models and Attributes | Developing Statistical Models |

Arrays and Matrices | Graphics and Procedures |

List and Data Frames | Packages and OS Facilities |

File Handling |

## Concepts That Will Help You Solve R Programming Homework & Assignments

**How do you graph a quadratic model in R Programming?**

A quadratic model is a second-degree polynomial that takes the form of ‘y = a + bx + cx^2’. To graph a quadratic model in R Programming, you can use the ‘ggplot2’ package.

First, you need to create a data frame that contains the values of ‘x’ and ‘y’ for your quadratic model. You can do this using the ‘data.frame’ function.

Next, you can use ‘ggplot’ to create a scatterplot of the data and add a quadratic regression line using the ‘stat_smooth’ function with the ‘method’ argument set to ‘lm’.

**How do you get a dataset in R Programming?**

R Programming provides several built-in datasets that you can use for analysis and modelling. To access these datasets, you can use the data function followed by the name of the dataset.

You can also import datasets from external sources such as CSV files using the 'read.csv' or 'read.table' functions.

**How do you find the mode of a variable in R Programming?**

The mode of a variable is the value that occurs most frequently in a dataset. To find the mode of a variable in R Programming, you can use the 'Mode' function from the 'DescTools' package.

**How do I find the optimal number of clusters in R?**

The optimal number of clusters is the number of clusters that best represents the underlying structure of the data. To find the optimal number of clusters in R Programming, you can use the elbow method or the silhouette method.

The elbow method involves plotting the within-cluster sum of squares (WCSS) against the number of clusters and selecting the number of clusters at the "elbow" of the curve.

The silhouette method involves calculating the silhouette score for each point in the dataset for a range of cluster sizes and selecting the number of clusters that maximize the average silhouette score.

**How to fit multivariate normal distribution in R?**

The multivariate normal distribution is a generalization of the normal distribution to multiple dimensions. To fit a multivariate normal distribution in R Programming, you can use the `mvtnorm` package.

**How to choose number of principal components in R?**

Principal component analysis (PCA) is a technique for reducing the dimensionality of a dataset by projecting it onto a lower-dimensional space. To choose the number of principal components in R Programming, you can use the scree plot or the cumulative proportion of variance method.

The scree plot involves plotting the eigenvalues of the principal components against their corresponding indices and selecting the number of principal components at the "elbow" of the curve.

The cumulative proportion of variance method involves calculating the proportion of variance explained by each principal component and selecting the number of principal components that explain a sufficiently large proportion of the total variance.

**Why should you convert a raw baseline to a time series object before running the smoothing analysis in R?**

A time series object is a data structure that contains data with time stamps. Before running a smoothing analysis on a raw baseline in R Programming, it is important to convert the data into a time series object because time series analysis requires data to be in a specific format.

To convert a raw baseline to a time series object, you can use the `ts` function.

**How to get a count of a variable in R?**

To get a count of a variable in R Programming, you can use the table function.

You can also use the count function from the ‘dplyr’ package.

**How to fix data in R?**

There are many ways to fix data in R Programming, depending on the nature of the problem. Some common issues and their solutions are:

__Missing values__: Missing values can be imputed using techniques such as mean imputation or regression imputation. You can use the ‘complete.cases’ function to identify rows with missing values, and the ‘na.omit’ function to remove them.__Outliers__: Outliers can be detected using techniques such as box plots or the Grubbs test. Outliers can be removed or transformed using techniques such as ‘winsorization’ or log transformation.__Inconsistent data__: Inconsistent data can be detected using techniques such as regular expressions or logical tests. Inconsistent data can be corrected using techniques such as string substitution or recoding.

## Why Take R homework help from Our Statistics Homework Help Experts?

We are the best online R programming homework help providers offering professional homework support to students across the globe. A few of the perks every student can reap by availing of our service include:

**Access to expert statistics tutors -**We have a team of R programmers who work on your homework. They first understand the requirement, do the research and give the solution from scratch.**Plagiarism free -**The solutions that are given by our team are free from plagiarism. We also run a plagiarism test before sending you the solution along with the report to improve your confidence levels.**Pocket-friendly pricing -**We understand the budget of students and designed our pricing structure by keeping students in mind. Students do not need to burn holes to avail of our service. Though our service is cost-effective, our solutions are top-notch.**Round-the-clock support -**If you have any queries regarding the homework help, you can ring, live chat or email us.

Our support team will respond as soon as they can. You can also track the progress of your assignment anytime or pass on additional requirements to the tutor to add to your solution.

## Example of A Simple R Programming Code Written By Our Expert

**Code for: **Keyword Sentiment Analyzer

**Solution:**

```
```{r setup, include=FALSE}
library(tidyverse)
library(tidytext)
library(glue)
library(stringr)
```
## Defining the sentiment analyser function
```{r}
sentiment <- function(doc){
# tokenize
tokens <- data_frame(text = doc) %>% unnest_tokens(word, text)
# we will use the "bing" positive-negative words list
d <- get_sentiments("bing")
# checking if the tokens are there in the "bing" list or not
check <- tokens$word %in% d$word
# FALSE in the check vector means that this particular word is not their in the "bing" list
pn <- c() #vector for "positive" = positive word, "negative" = negative word, NA if word not in "bing" list
for (i in 1:length(check))
{if (check[i] == TRUE)
{pos <- match(tokens$word[i],d$word)
pn[i] <- d$sentiment[pos]}
}
# number of positive tokens
positive.count <- length(which(pn=="positive"))
# number of negative tokens
negative.count <- length(which(pn=="negative"))
# calculating final score
final.score <- positive.count - negative.count
return (final.score)
}
```
## Testing the function on a sample document
```{r}
sample <- "This dinner is WONDERFUL"
sentiment(sample)
```
```

If you need help in completing the R programming homework, then you can take the help of our experts who work day in and day out to finish the task on time.