Publications by Nirmal Ghimire, K-16 Literacy Center
Text Mining 2
Text mining is apparently a new tool. It has opened up many avenues for data analysis, and what we generally call Qualitative Data Analysis in Education. We can see the old texts from new perspectives, figure out patterns in them, or even check for the plagiarism to name a few. In this demonstration, I am going to turn my 251-page-long Ph.D. dis...
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Simple Text Analysis with Tidy in R
text <- c("Because I could not stop for Death -", "He kindly stopped for me -", "The Carriage held but just Ourselves -", "and Immortality", "Girls go to college to get more knowldege -", "Boys go to Jupiter to get more stupider -") print(text) [1] "Because I could not stop for Death -" ...
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Practical Data Manipulation
The solution for Task 1a and 1b must be programmatic and not resolved using copy/paste. You may use programs such as Access, SQL, SPSS or SAS. Save the program and logic you used to complete these tasks with your final files. You could also include your assumptions and explanations of your methodology if you would like. library(kableExtra)# To cr...
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Exponential Simulation, Experimental Research and linear regression
rm(list=ls()) library(tidyverse) library(ggplot2) library(cowplot) library(purrr) Exploring Central Limit Theorem In this problem, we will use R to simulate the distributions of the sample mean as the sample size increases and to illustrate the central limit theorem. The simulations will help us answer or verify our answers of the questions ...
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Table Manipulation for GRADE Analysis, Part 3
Loading Required Libraries #Loading Required Packages library(ez)# For conducting ANOVA easily library(multcomp)# For conducting post-hoc tests library(nlme) # Just in case we want to run a multilevel model library(pastecs) # To run descriptive analyses library(reshape) # If I have to reshape the table library(WRS) # to conduct robust tests...
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Full Study- H1B Facts and Figures
Recently, I got interested in analyzing H1B facts and figures in the United States because my most recent employer has moved forward with H1B application. I wanted to move forward with this analyses thinking that it would provide ample opportunities to hone my data science skills and learn some advance skills. This work features all key aspec...
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Facts and Figures of H1B Employees in the US: Exploratory and Trend Analyses
Highlights This is a small study (pilot) research on the facts and figures of of H1B employees in the United States using a quarter long actual data. It will be followed by a much bigger data set if the findings suggest that it is worthy of inquiring. The data came from the online repository of the Department of Labor. This study doesn’t te...
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Regression Tutorial and Poor Model Fitting Alternatives
This report summarizes the findings of a series of regression analyses conducted using the MARSI data. Please note that the total sample size was, N = 13. Most of the regression analyses are conducted using higher sample size than the one in this study. There are various recommendations about the sample size and the power of a study. The minimum,...
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Advanced Two Level Hierarchical Models
This is a sample hierarchical linear model research. This model begins with the necessary nitty-gritty of data analyses in R and culminates in an advanced 2-level mixed linear model (MLM) which contains fixed slopes, random slopes and even moderators. It took quite a while for me to figure out ways to conduct these analyses, especially the M...
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