this is a hands on practices from Cancer Epidemiology by Professor MING-WHEI YU @NTU.

this is an assignment for winter course from NTU

Winter course @NTU by Andrei R. Akhmetzhanov

tutorial on interpreting meta analysis for biostat final project

they call it Monte-Carlo, it seems to be a cool thing, but what you're doin is just making up some random data and estimate the interval.

by calculating the gradient, hessian and loglik by hand, we can solve the betas by using newton-raphson method again. vcov = solve(-hessian). 12 age groups hence 11 dummy.

High-dimensional Newton-Raphson method, which contains gradient matrix, hessian matrix, and uses variance-covariance matrix to evaluate the model stability.

likelihood is what we actually care about, but through making it loglikelihood, it can be calc by sum and avoid underflow. In this practice, I tried to estimate the lambda by loglik func, and use newton-raphson method to find the MLE. Secondly, loglik of linear model by hand. nice to know those heavy math stuff, which often be ignored during these days.

For estimating the confidence interval (CI) under a binomial distribution, the typical approach involves starting with a point estimate. The Newton-Raphson method is a numerical technique primarily used for finding roots. Exact CIs refer to specific statistical methods tailored to the characteristics of the binomial distribution. These methods provide precise CIs without relying on large sample approximations. Asymptotic CIs, on the other hand, use large sample approximations and assume normal distribution, which is often valid for larger sample sizes. both could be test out by using binom package.

I have still no idea about the return() in the hanoi tower part.

tried to write factor function. the only thing i want to mention is that while using the for loop to specify the colors and characters for the lines, you need to subtract the number to get the characters match.

while loop, for loop, and do...until loop.

Can we write our own finctions, or even deconstruct the lm() function and rebuilt it on our knowledges for regression? sure yeah.

what does T statistics or Fstatistics even means? let's plot the PDF and CDF and draw out the p values and see

There's some complex social background back in Taiwan's 80s, that's when economy goes well and having high GDP, but indigenous people are neglected from the economic boom, hence, sex trafficking on teenager started to become a big problem. This is a quick review for the background, and within some current fertility statistics.

This is note for our learning process!! We are 4 learner from Hsinchu, Taiwan, in diiferent age: 23, 52, 73,and 75, and attempt to learn Spanish together on our own!!

This is an assignment for Data Science Specialization's class Developing Data Product. I put all of the site url of each college on the map, feel free to look around, NTNU's the best!!!

20230525

THis is a assignment from Statitical Inference Coursera. We'll take practice on simulating CLT and t test.

This is a project to explore the National Oceanic and Atmospheric Administration (NOAA) Storm Database, and through some exploratory analysis on the health consequences and economical loss caused by severe weather events.