1. Function ‘apply’ on a simple matrix: a. Get the following matrix of 5 rows and call it ‘mymatrix’ b. Get the mean of each row c. Get the mean of each column d. Sort the columns in ascending order 2. Using ‘lapply’ on a data.frame ‘mtcars’ a. Use three ‘apply’ family functions to get the minimum values
1. a. Write a function “myfun” of x to the power of its index position (x, x^2, x^3, …) b. Test the function with an x of 1:10 c. Enlarge the function “myfun” with a division through the index position (x, x^2 / 2, x^3 /3, …) 2. a. Write a simple moving average
Learn Excel 2016 from scratch or improve your skills and learn new tricks to speed up your work Do you want to make your work with Excel faster, more efficient and fun? Do you want to learn more about hidden tricks that make Excel easier to use? Are you looking for a structured way to
In this video you will learn how you can get used to new functions in R. I will explain: how to use the help function; what you can find in the help section; how you can identify the default settings in a function; what the output values will be like. The general help function of
In today’s quick video lesson you will learn how you can use the R help function. This video deals with the general help functions in R. Help on a functions level is discussed in this article. Updated video on the very topic
