Most popular social media platform
73% of the US adult population
Most evenly-distributed demographics
Photo posts: 120% more engagement
<= 250 chars: 60% more engagement
Thurs & Fri: 18% better engagem
What is probability?
Probability functions and properties
How to do it with R?
Discrete Random Variables
Probability Mass Function, Cumulative Distribution Function
Mean, Variance, Standard deviation
Expectation, Moment Generation Functions
Concepts, Properties, and Computations
R and RStudio
Graphical Techniques (stripchart, histogram, barplot)
Numerical Techniques (center, quantiles, spread)
Introduction to R and Rstudio
R is a Programming language:
Developing statistical software
Popular in academia (statisticians)
Popular in industry (data miners/scientists)
Homework on Probability and Distributions
The exam duaration is two hours.
You are not allowed to consult any lecture materials, text books, Internet, etc.
You are allowed to bring one A4 paper. You can write on both sides whatever helpful
Suppose we want to estimate a parameter (e.g. population proportion, population average, etc.). The first thing to notice is that it
would be impossible to exactly pinpoint the value with 100% accuracy without sampling every single mem
We wish to estimate a population parameter such as a mean , variance 2 ,
proportion p, etc. We only have access to sample data. Let be the parameter to be
estimated, the method of moments (MOM) computes as the estimate of using
the moments of the populati