Publications by Vladimir Nimchenko
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##Introduction: In my assignment, I was given an excel data set on the present allocation of the Infrastructure Investment and Jobs Act funding by State and Territory.I will need to create visualizations which most accurately answer the following questions: 1).Is the allocation equitable based on the population of each of the States and Territ...
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library(Matrix) library(MASS) library(dplyr) ## ## Attaching package: 'dplyr' ## The following object is masked from 'package:MASS': ## ## select ## The following objects are masked from 'package:stats': ## ## filter, lag ## The following objects are masked from 'package:base': ## ## intersect, setdiff, setequal, union Desc...
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library(Matrix) library(MASS) library(dplyr) ## ## Attaching package: 'dplyr' ## The following object is masked from 'package:MASS': ## ## select ## The following objects are masked from 'package:stats': ## ## filter, lag ## The following objects are masked from 'package:base': ## ## intersect, setdiff, setequal, union PROB...
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#Problem 1. Probability Density 1: X~Gamma. Using R, generate a random variable X that has 10,000 random Gamma pdf values. A Gamma pdf is completely describe by n (a size parameter) and lambda ( λ , a shape parameter). Choose any n greater 3 and an expected value (λ) between 2 and 10 (you choose). #We will use the following function in R: rga...
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#Problem 1. Probability Density 1: X~Gamma. Using R, generate a random variable X that has 10,000 random Gamma pdf values. A Gamma pdf is completely describe by n (a size parameter) and lambda ( , a shape parameter). Choose any n greater 3 and an expected value () between 2 and 10 (you choose). #We will use the following function in R: rg...
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PROBLEM SET 1 Show that ATA != AAT. (Proof and demonstration) # create as sample matrix M <- matrix(c(7,1,5,8,2,3,9,0,4),ncol =3) # Display the sample matrix M ## [,1] [,2] [,3] ## [1,] 7 8 9 ## [2,] 1 2 0 ## [3,] 5 3 4 # calculate as sample matrix transpose Mt <- t(M) # Display the sample matrix trans...
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library(tidyverse) library(openintro) data(nycflights) names(nycflights) ## [1] "year" "month" "day" "dep_time" "dep_delay" "arr_time" ## [7] "arr_delay" "carrier" "tailnum" "flight" "origin" "dest" ## [13] "air_time" "distance" "hour" "minute" glimpse(nycflights) ## Rows: 32,735 ## Columns: 16 ## $ ...
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library(tidyverse) library(openintro) data(nycflights) names(nycflights) ## [1] "year" "month" "day" "dep_time" "dep_delay" "arr_time" ## [7] "arr_delay" "carrier" "tailnum" "flight" "origin" "dest" ## [13] "air_time" "distance" "hour" "minute" glimpse(nycflights) ## Rows: 32,735 ## Columns: 16 ## $ ...
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DATA 607 - Homework Assignment # 3 Vladimir Nimchenko 1.Using the 173 majors listed in fivethirtyeight.com’s College Majors dataset [https://fivethirtyeight.com/features/the-economic-guide-to-picking-a-college-major/], provide code that identifies the majors that contain either “DATA” or “STATISTICS” library(stringr) library(dplyr)...
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library(tidyverse) library(openintro) library(ggplot2) Exercise 1 What does a streak length of 1 mean, i.e. how many hits and misses are in a streak of 1? What about a streak length of 0? A streak of 1 means one hit followed by one miss. A streak length of 0 refers to a particular miss which comes after a miss which ended the previous stre...
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