Reading First

Wong-Ratcliff et al. on Effects of the Reading First Program Quantitative research studies prioritize the collection and analysis of...

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- Sep 21, 2021
- 6 min

Reading First

Wong-Ratcliff et al. on Effects of the Reading First Program Quantitative research studies prioritize the collection and analysis of...

- Apr 24, 2021
- 5 min

One-Tailed and Two-Tailed Hypothesis Testing

More statistical power does not necessarily make for a better hypothesis test. Data of the kind typically used in quantitative research...

- Apr 24, 2021
- 4 min

Random Selection and Assignment

Is it reasonable or even possible to prioritize one method? In research, a population represents the entirety of a group of items or...

- Apr 24, 2021
- 7 min

Generating a Study Sample: Clusters and Strata

Random Selection and Random Assignment in Educational Research In designing a quantitative research project where statistical analysis...

- Apr 24, 2021
- 5 min

Quantitative or Qualitative?

A Quick Reflection through the Philosophy of Science I believe that whatever the program of study and college or university in which a...

- Mar 28, 2021
- 2 min

A Quick Look at Induction and Deduction

“There is nothing more deceptive than an obvious fact.” -A.C. Doyle, The Boscomb Valley Mystery Induction is the process of moving from...

- Mar 28, 2021
- 1 min

Dependent or Independent?

A quick look at two types of variables using synonyms to distinguish one from the other. The distinction between dependent and...

- Feb 23, 2021
- 5 min

Revisiting Accepting and Failing to Reject

Based on a reader's response and questions, let's look again at the difference between accepting the null hypothesis and failing to...

- Feb 21, 2021
- 5 min

Accepting ≠ Failing to Reject

It's better to be found not guilty than presumed innocent. Here's why. Null and Alternative Hypotheses An hypothesis is a claim or...

- Feb 14, 2021
- 5 min

Normalizing: Z-Scores, T-Scores, and Stanines

Raw data takes on powerful meaning when transformed into standardized values. Transformation of Raw Data: X-Values Statistics is...

- Feb 14, 2021
- 3 min

Factorials: When 0 Equals 1

Combinations and permutations rely on factorials but, for me, the more interesting question is why 0! = 1. Combinations (nCr) and...

- Feb 7, 2021
- 3 min

The Interpretations of Probability

To the surprise of no one, probability is a complicated matter. Interpretations of Probability Probability is the branch of mathematics...

- Jan 30, 2021
- 2 min

The Limitations of Range

Why should we avoid range as an indicator of variability? And is it appropriate to canonize measures of spread? Variability is a...

- Jan 30, 2021
- 3 min

Back to Basics: Central Tendencies

Mean, Median, and Mode are more complex than I remember. Statistics is essential to research in education and, as a result, I'm spending...

- Jan 24, 2021
- 5 min

Liars Will Figure

Getting a handle on graphs is key to communicating and interpreting research. Popular Types of Graphs, their Uses, and Limitations As an...

- Jan 18, 2021
- 4 min

Defining Your Parameters

Data strength determine how one approaches statistical inference. Parametric and Non-Parametric Statistics Inferential statistics is an...

- Jan 17, 2021
- 3 min

Grappling with Paradox

While statistics can be challenging, it opens the doors to scientific research and offers insight into the world around us. As Simpson's...

- Jan 17, 2021
- 2 min

Four Dimensional Statistical Thinking

Worth Reading: Statistical Thinking in Empirical Enquiry (1999) Wild and Pfannkuch’s four-dimensional approach to statistical research...

- Jan 11, 2021
- 2 min

To infer or not to infer?

A brief overview of descriptive and inferential statistical approaches Data Analysis with Descriptive and Inferential Statistics...

- Jan 11, 2021
- 3 min

How bad is the pie (chart)?

A brief history of data presentation The visual presentation of data has a long history not without its own set of controversies and...

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