Statistics

Statistics and Python: Creating a frequency counts array for data Python, Statistics: Stem and Leaf Part 4, a mirrored article Descriptive Statistics for Sample with Frequency Data” Python, Statistics: Computing the lower, mid and upper “hinges” of a sample Descriptive Statistics in Python

Our old stem and leaf code has been updated to include frequency counts. Here is the latest incarnation, following or last past discussion in Part 3 What gives??? The lines following the paragraph above are not displayed! Readers, visit Doc Ernie’s Adventures for the full article. Seems an HTML block error. Seems WordPress does not [...]

Visit our sister blogs :dr-adorio-adventures and/or extreme-solvers for information on finite sampling. The solver is at ExtremeSolvers: Finite Sampling Demonstrator

Students should be exposed more to questions and answers about combinatorics in order to be confident in answering exam questions in Statistics and Probability. Q1. From a group of 4 men and 5 women, how many committees of size 3 are possible a. with no restrictions? b. with 1 man and 2 women? c. with [...]

Simeon Dennis Poisson derived his distribution as a limiting form of the binomial distribution as while stays constant. It is very instructive for aspiring mathematical statisticians and economists to see the details. We have and . The binomial distribution pmf then becomes which when simplifying . Recall that the limit of a product is the [...]

The founder of SPSS (Statistical program for the Statistical Sciences) is creating a new company to market R for enterprise and commercial data visualization, mining and analysis applications. It promises to make available a free academic version of R. It builds on the high quality of and frequent updates to the free and open source [...]

It is 2:23 AM, April 3 and Blogger is encountering problems saving this blog post. I will make a mirror copy at my alternate site Digital Explorations. In this post, we discuss the two cases of testing variances. One is testing whether a population variance or standard deviation is equal to some assumed variance. The [...]

This test is mirrored in Dr-Adorio-Adventures. We noticed that the Latex plugin for Blogger is full of errors. From the Word Bank provided at the end of the problems, write down the best answer. The value computed by A plot which quickly shows the distribution of the data, showing minimum, Q1, median, Q2, maximum values. [...]

Last time we wrote code for generating all subsets of an n element set using indices to indicate membership in each subset. Here is a preliminary code for doing allsubsets regression. We are encouraging our readers to make suggestions and corrections to our allsubsets Pyton code. ?Download allsubsets.py1 2 3 4 5 6 7 8 [...]

Here we are concerned with making an inference about a population proportion consisting of two categories(like Success or Failures, Pro-Villar or Anti-Villar) from data obtained in a sample of size . The null hypothesis is that the population proportion . Mean and variance of sample proportion From the binomial distribution, we know that the mean [...]