Statistics 101

Continuing education online courses in statistics, health and ethics.


S101. Basic Statistics: Descriptive Statistics and Sampling, 30 CE-hours, $63


Professor Rudolf Klimes, PhD, welcomes you to this online course. Keep going.

START the course here. TAKE the exam at the end. PAY after the exam.

Course Description:

This course provides an introduction to selected important topics in statistical concepts and reasoning. It represents an introduction to the field and provides a survey of data and data types. Specific topics include tools for describing central tendency and variability in data; methods for performing inference on population means and proportions via sample data.


  1. Understand and give examples of different types of data.
  2. Calculate standard normal scores and resulting probabilities.
  3. Calculate and interpret confidence intervals for population means.
  4. Calculate the mean, median, mode, maximum, SD, variance, range, IQR,  p, t-test, NOVA, Chi-Square, R, n, Bar-chart, Q1 of selected data.

Course Format:

Online linked resources and lectures that you can use anytime 24/7. One multi-choice test.

Course Developers and Instructors:

R. Klimes, PhD, MPH (John Hopkins U), author of articles on statistics, infection control and hygiene. Heather Hawkins, DMD (Nova Southeastern U), specialist in infection control and research. 

Course Time:

About thirty hours for online study, test taking with course evaluation feedback and certificate printing.

Course Test 6632: 

Click here for the test that requires 75% for a passing grade.


Explore and Review Textbooks:  CalculatorSoup 

Study Lessons:  Part 1   Part 2    Part 3.Part 4 …….. Click on these 4 links to study the course.

Use Statistical Calculator:

CalculatorSoup   Statcalc   Easycalculation    Mathportal

Explore Practice Test

Use Statistics Library and Resources:   Open U Course

When talking about statistics as mathematical operations, there are two basic divisions within the field: descriptive and inferential. Descriptive statistics uses graphical and numerical summaries to give a ‘picture’ of a data set. Inferential statistics, which use mathematical probabilities, make generalizations about a large group based on data collected from a small sample of that group. This course focuses on descriptive statistics, and on their use. Source

TEST 6632: Click her for the self-correcting test and online payment, and receive your certificate immediately online.




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