Dustin K MacDonald

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Math and Statistics

Scales of Measurement

  • by Dustin
  • Posted on December 24, 2018December 24, 2018
  • Math and Statistics

Introduction This post is part of a series I’ve been chipping away at, where I teach basic statistics and probability. The other posts in the series include: Measures of Central Tendency Frequency Distributions Dispersion and […]

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Z-Test Hypothesis Testing

  • by Dustin
  • Posted on August 8, 2016November 25, 2018
  • Math and Statistics

Introduction The Z-test is a simple tool for hypothesis testing that can be used to identify whether a mean result, when compared to a larger set is statistically significant when the larger set is a normal […]

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Statistical Coding and Classification

  • by Dustin
  • Posted on July 11, 2016November 25, 2018
  • Math and Statistics

Introduction to Classification Oftentimes when performing research or intelligence analysis, the first step is to classify the available data. Classification provides a number of benefits that make later analysis easier. For one, they allow you […]

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Predicting Your Helpline Call Answer Rate

  • by Dustin
  • Posted on January 29, 2015November 25, 2018
  • Math and Statistics

One role of helpline managers is to manage their workers so that they can answer the most calls possible within the available resources. Even helplines that run 24-hours and have 100% coverage can’t answer 100% […]

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Least-Squares Regression

  • by Dustin
  • Posted on January 26, 2015November 25, 2018
  • Math and Statistics

Regression is a technique used to predict future values based on known values. For instance, linear regression allows us to predict what an unknown Y value will be, given a series of known X and […]

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