Publications by Deepa Sharma
Data 624 week 2
Excercise 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? * Use autoplot() to produce a time plot of each series. * For the last plot, modify the axis la...
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Data 605 Final Part 1
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. This project will show off your ability to understand the elements of the class. Probability Dens...
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Data 605 Part 2
Problem 2: You are to register for Kaggle.com (free) and compete in the House Prices: Advanced Regression Techniques competition. ##https://www.kaggle.com/c/house-prices-advanced-regression-techniques## . I want you to do the following. 5 points. Descriptive and Inferential Statistics. Provide univariate descriptive statistics and appropriate pl...
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Data 605 HW 14
HW14 Deepa Sharma May 07, 2023 library(pracma) ASSIGNMENT 14 - TAYLOR SERIES IS 605 FUNDAMENTALS OF COMPUTATIONAL MATHEMATICS - 2021 This week, we’ll work out some Taylor Series expansions of popular functions. • f (x) = 1/(1−x) • f (x) = ex • f (x) = ln(1 + x) • f(x)=x(1/2) For each function, only consider its valid ranges as indicat...
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Data 605 HW 13
Question 1: Use integration by substitution to solve the integral below. \[\int 4e^{-7x} dx\] Let \[u = -7x\] then \[\frac{du}{dx} = -7\] \[dx = -\frac{du}{7}\] Substituting these into the integral, we get: \[\int 4e^u \cdot \left(-\frac{du}{7}\right)\] \[= -\frac{4}{7} \int e^u du\] \[= -\frac{4}{7} e^u + C\] Substituting \[u = -7x\] \[\int 4e^{-...
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Data 605: HW12- MLR
library(dplyr) library(ggplot2) Questions: 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...
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Discussion 12- 605
Libraries Discussion 12: 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? This dataset ...
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Discussion 11:Simple Linear regression
Discussion 11:Using R, build a regression model for data that interests you. Conduct residual analysis. Was the linear model appropriate? Why or why not? I am using “Internet Users Country-wise 1980-2020” dataset from Kaggle to see the relationship between number of internet users vs cellular Subscription. Here is the link to the dataset: h...
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Data 605: HW#11 SLR
Question: Using the “cars” dataset in R, build a linear model for stopping distance as a function of speed and replicate the analysis of your textbook chapter 3 (visualization, quality evaluation of the model, and residual analysis. Simple Linear Regression: The simplest linear regression model finds the relationship between one input vari...
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HW#10
Question: Smith is in jail and has 1 dollar; he can get out on bail if he has 8 dollars. A guard agrees to make a series of bets with him. If Smith bets A dollars, he wins A dollars with probability .4 and loses A dollars with probability .6. Find the probability that he wins 8 dollars before losing all of his money if (a) he bets 1 dollar each...
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