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STAT 513413: Lecture 4 A bit of linear algebra Vectors and matrices A tale of expert code II: You never invert a matrix The theory for a linear model y X says that you obtain the least squares estimates via the formula b XTX1XTy However, never ever every rule has an exception, but do b […]

问题要求： Steer helicopter (“Fort Apocalypse”) Program the controls of the helicopter for a simple version of the classic computer game “Fort Apocalypse” from 1982. (If you want to see how it looked back then, here is a Fort Apocalypse online version) The functions setup () and loop () must be programmed for this (see also

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STAT 513/413: Lecture 5 Random numbers: basics (What, after all, is “completely random”?) Computers: random or deterministic? R version 3.5.3 (2019-03-11) — “Great Truth” … > runif(6) [1] 0.7811872 0.2256249 0.1029852 0.9418297 0.1088203 0.7156732 Now, quit R and start it again: R version 3.5.3 (2019-03-11) — “Great Truth” … > runif(6) [1] 0.7370521 0.4887825 0.2355647

STAT 513/413: Lecture 7 What we are after: means (what is probability, after all?) Obtaining 2 or less heads in 3 coin tosses How to count the number of heads in repeated 3 coins tosses – and subsequently estimate the probabilities as frequences? First, we generate the tosses: > numrep=10 > set.seed(1) > alltosses=matrix(floor(2*runif(3*numrep)),numrep,3) >

STAT 513/413: Lecture 6 Random numbers: distributions (Transforming uniformly distributed numbers to something else) Almost all of them are somewhere out there Naming convention in R ddistrib(x,…) – density function pdistrib(x,…) – cumulative distribution function qdistrib(p,…) – quantile function rdistrib(n,…) – random numbers If no other parameter is specified, it assumes the “standard” version of

2020/1/23 HW2: WHILE interpreter HW2: WHILE interpreter Submit Assignment Due Friday by 11:59pm Points 100 Submitting a file upload Programming Assignment 2 – The WHILE language: In Haskell, or the language of your choice, write an interpreter for the WHILE language. Your program should consist of: A data structure for the abstract syntax tree (AST)

COMPSCI 115 Lab 2
Topic: Loops Four parts: • Write a program which prints a sequence of integers that are multiples of 10, starting at 0 and ending at 100. • Write a program that computes the average of 10 random odd integers, ranging from 0 to 500. • Write a program that prints whatever the

SS2864B, 2020 Assignment #1 due to January 29, 2020 Instructions Submit a paper version of your solutions (appropriately annotated with com- ments, plots, and explanations) and your R codes to solve each question. Save all your R codes in a script file. 1. Use R functions search and objects to find all possible R built-in

SSC442 Lab 2: Linear Regression and Simple Analyses This question will require you to analyze a new dataset. Specifically, this lab utilizes the ames.csv data found here. This is a famous dataset about home sales from Ames, Iowa. Backstory and Set Up You have been recently hired to Zillows Zestimate product team as a junior