Stat统计课程常用R语言, python和matlab等进行画图和数据统计分析. 统计和金融经济和机器学习等课程密切相关.
CS 238 Homework Jens Palsberg January 2022 Catalog of matrices cos (θ/2) −i sin (θ/2) −i sin (θ/2) cos (θ/2) cos (θ/2) − sin (θ/2) sin (θ/2) cos (θ/2) where θ, φ ∈ R. Individual homework Unitary matrices Question 1. Prove that all the matrices in the catalog above are unitary. Question 2. Show that […]
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CS6603 AI Ethics and Society Homework Project #3 ● Dixon, Lucas & Li, John & Sorensen, Jeffrey & Thain, Nithum & Vasserman, Lucy. “Measuring and Mitigating Unintended Bias in Text Classification,” AAAI/ACM Conference on AI, Ethics, and Society, pp. 67-73, 2018. https://www.aies- conference.com/2018/contents/papers/main/AIES_2018_paper_9.pdf ● Tolga Bolukbasi, Kai-Wei Chang, James Zou, Venkatesh Saligrama, and Adam Kalai,
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Task 1 Calculate the mean and standard deviation for PM10 and PM2.5 for both sites: calculate the mean and standard deviation for the entire year first of all, and then for each quarter. Present these values in a simple table. For the air pollution data, how well do the annual parameters summarise the datasets? Do
— title: “Homework 3” subtitle: “Psychology 2812B FW22” — # Lab Component ## 1. LGA mean departure delay Load the `tidyverse` package and the `nycflights` dataset. Note that you will first need to install the nycflights13 dataset: “`{r} #| echo: true #| eval: false install.packages(“nycflights13”) “` “`{r} #| echo: TRUE #| output: FALSE library(tidyverse) library(nycflights13)
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1. Write a short comment about what this R script is about. 2. Remove all existing objects in your “environment”. 3. Create a vector called “HousePrices”, which consists of 100 random numbers generated from a Normal distribution, mean and the standard deviation of which are 300,000 and 50,000 respectively. Hint: use function “norm” to generate
2B03 Assignment 1 subtitle: “Tables, figures, and summary statistics” # Goals By completing this assignment, you will: – learn how to edit text in R Markdown – learn to do basic computations using `R` – learn to compute summary statistics in `R` – learn how to load data in `R` – practice making frequency tables,
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STATS 3DS3 Winter 2023 ASSIGNMENT 1 Submit through Avenue to Learn. Due before 11pm on Friday, January 27th. Your assignment must conform to the Assignment Standards listed below. Assignments submitted up to 24 hours late will incur a 30% penalty. Assignments submitted more than 24 hours late will receive a zero grade. Answer all 3
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Problem 2 The Multiple Testing dataset (multiple.txt) is a simulated dataset which contains 50 variables and 100 observations per variable. Suppose we know that the first 10 variables have mean equal to 2 and the rest of them have mean equal to 0. Analyze the dataset according to the following steps: 1. Perform multiple testing
Assignment 1 – STAT 453/558 Due date: 20 January, 2023 1) Suppose that we are testing H0: μ1 = μ2 versus H1: μ1 > μ2 with a sample size of n1 = n2 = 10. Both sample variances are unknown but assumed equal. Using R, find p-values for the following observed values of the test
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