Publications by Marjete
data 624, hw1
2.1 Explore the following four time series: Bricks from aus_production, Lynx from pelt, Close from gafa_stock, Demand from vic_elec. Use ? (or help()) to find out about the data in each series. What is the time interval of each series? I used ‘help’ on the right bottom corner “aus_production” is Quarterly production of selected commodities...
5342 sym R (7663 sym/54 pcs) 28 img
605 final Exam
Computational Mathematics Your final is due by the end of the last week of class. You should post your solutions to your GitHub account or RPubs.You are also expected to make a short presentation via YouTube and post that recording to the board. 5 mins explaining answers This project will show off your ability to understand the elements of the clas...
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Assignment 15
Assignment 15 1. Find the equation of the regression line for the given points. Round any final values to the nearest hundredth, if necessary. ( 5.6, 8.8 ), (6.3, 12.4 ), ( 7, 14.8 ), ( 7.7, 18.2 ), ( 8.4, 20.8 ) # define the points by x and y values x <- c(5.6, 6.3, 7, 7.7, 8.4) y <- c(8.8, 12.4, 14.8, 18.2, 20.8) # linear regression regression ...
3197 sym R (2177 sym/12 pcs)
Assignment 5
Assignment 5 1.(Bayesian) A new test for multinucleoside-resistant (MNR) human immunodeficiency virus type 1 (HIV-1) variants was recently developed. The test maintains 96% sensitivity, meaning that, for those with the disease, it will correctly report “positive” for 96% of them. The test is also 98% specific, meaning that, for those without t...
5456 sym
Assignment 6
Assignment 6 Question 1. A bag contains 5 green and 7 red jellybeans. How many ways can 5 jellybeans be withdrawn from the bag so that the number of green ones withdrawn will be less than 2? green must be 1 or 0 choose 1 green jellybean from the 5 green jellybeans in the bag * choose 4 red jellybeans from the 7 red jellybeans in the bag (1 green)...
3559 sym Python (1935 sym/25 pcs)
Assignment 4
Assignment 4 With the attached data file, build and visualize eigenimagery that accounts for 80% of the variability. Provide full R code and discussion. #load libraries library(imager) ## Loading required package: magrittr ## ## Attaching package: 'imager' ## The following object is masked from 'package:magrittr': ## ## add ## The following ...
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Assignment 14
Assignment 14 This week, we’ll work out some Taylor Series expansions of popular functions. f (x) = 1/ (1−x). f (x) = e^x f (x) = ln(1 + x) f(x)=x^(1/2) For each function, only consider its valid ranges as indicated in the notes when you are computing the Taylor Series expansion. Please submit your assignment as an R- Markdown document. (1...
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hw13-605
Assignment 13 1. The definite integral of \(4e^{-7x}\) from 0 to 1 is given by: \[ \int_{0}^{1} 4e^{-7x} \,dx \] Substitute u for -7x and find the derivative and solve for dx \[ \frac{du}{dx} = -7 \implies dx = -\frac{1}{7}du \] Substitute dx into the original integral, replace -7x with u and dx with -1/7du and simplify: \[\int 4e^u \left(-\frac{1...
5121 sym Python (860 sym/9 pcs) 1 img
605 - assignment-12
Assignment 12 The attached who.csv dataset contains real-world data from 2008. The variables included follow. Country: name of the country LifeExp: average life expectancy for the country in years InfantSurvival: proportion of those surviving to one year or more Under5Survival: proportion of those surviving to five years or more TBFree: proportion ...
5465 sym R (4332 sym/22 pcs) 15 img
605 - discussion board 12
Multiple Regression Using R, build a multiple regression model for data that interests you. Include in this model at least one quadratic term, one dichotomous term, and one dichotomous vs. quantitative interaction term. Interpret all coefficients. Conduct residual analysis. Was the linear model appropriate? Why or why not? I will use a dataset fro...
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