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R Programming

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R programming tutorials includes two parts. Part 1 focus on R programming fundamentals. There are following sections in this part: Get started with R and RStudio environment; R data structure and create datasets; R data management basic methods; R data management advanced methods; Data visualization with ggplot2 package; Data analysis with dplyr package; Working with string and text mining. Part 2 focus on Statistical data analysis using R programming.

R Programming

Arithmetic operations of Numpy arrays in Python

We provide affordable online training course(via ZOOM meeting) for Python and R programming at fundamental level, click here for more details. Arithmetic operations of Numpy ndarrays are element-wise. If an array has addition, subtraction, multiplication or division with a scalar, each element will have the same operation and the result Read more…

By wilsonzhang746, 9 monthsJuly 25, 2024 ago
Numpy

Creating Numpy arrays using ones(),zeros(),arange(), reshape(), linspace() and random() in Python

We provide affordable online training course(via ZOOM meeting) for Python and R programming at fundamental level, click here for more details. In addition to using array() function that passes a list or tuple to generate an Numpy array in Python, there are lots of ready-made functions that make it possible Read more…

By wilsonzhang746, 9 monthsJuly 24, 2024 ago
R Programming

How to calculate probability from Negative Binomial distribution in R

We provide effective and economically affordable online training courses for R and Python, click here for more details and course registration ! Negative binomial distribution is used to model the particular probability of k-th success occurring at x-th Bernoulli trial, which is equivalent to say that it has experienced x-1 Read more…

By wilsonzhang746, 9 monthsJuly 20, 2024 ago
R Programming

How to calculate probability of Hypergeometric distribution in R

We provide effective and economically affordable online training courses for R and Python, click here for more details and course registration ! Hypergeometric distribution is connected with taking n items (no replacement) from N items, where k items labeled success and N-k items failure. The success number x of n Read more…

By wilsonzhang746, 9 monthsJuly 18, 2024 ago
R Programming

How to calculate binomial distribution in R

We provide effective and economically affordable online training courses for R and Python, click here for more details and course registration ! Binomial distribution is a discrete random distribution modeling the probability of event success number x in N Bernoulli trial. A Bernoulli trial is an experiment of binary (success/fail) Read more…

By wilsonzhang746, 9 monthsJuly 17, 2024 ago
Python

Using while loop to move items between two lists in Python

We provide affordable online training course(via ZOOM meeting) for Python and R programming at fundamental level, click here for more details. It is very often that items in list should be moved to another list in Python programming. For example, users trying to register on a website can only be Read more…

By wilsonzhang746, 9 monthsJuly 16, 2024 ago
Python

How to pass arbitrary number of information when calling a function in Python

We provide affordable online training course(via ZOOM meeting) for Python and R programming at fundamental level, click here for more details. After a function is defined and will be called, it is natural to pass required information in the calling statement. In the following example, we create a function about Read more…

By wilsonzhang746, 9 monthsJuly 14, 2024 ago
Dplyr

How to use arrange() function in R to sort dataset

We provide effective and economically affordable online training courses for R and Python, click here for more details and course registration ! arrange() function from Dplyr package in R provides an alternative way as sort() function in R base installation for sorting a data frame with respect to variables, either Read more…

By wilsonzhang746, 10 monthsJuly 9, 2024 ago
Dplyr

How to use filter() function to select observations in R

We provide effective and economically affordable online training courses for R and Python, click here for more details and course registration ! Dplyr is a package in R. It belongs to Tidyverse framework, and is allowed to use pipeline structure to chain multiple operations together into one statement. There are Read more…

By wilsonzhang746, 10 monthsJuly 8, 2024 ago
Python

Nesting dictionary in Python

We provide effective and economically affordable online training courses for R and Python, click here for more details and course registration ! Dictionary in Python is a useful data object that stores key-value paired information. It can be nested, combined with lists or with dictionaries. In this post, we briefly Read more…

By wilsonzhang746, 10 monthsJuly 6, 2024 ago

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