Dr. James McCaffrey presents a complete end-to-end demonstration of linear regression with two-way interactions between predictor variables. Standard linear regression predicts a single numeric value ...

Kenneth Harris, a NASA veteran who worked on the James Webb Space Telescope, shares how hardware and software engineering combine to make the $13 billion observatory function. He explains how the ...

To all the challenges the solar industry is facing today, add one more: cultivating a domestic market for lamb meat. It may seem an unlikely mission for clean-energy developers, but in many states, ...

Index funds track financial indexes like the S&P 500, allowing broad market investment. Low expense ratios in index funds make them a cost-effective investment choice. Investing in index funds offers ...

Body mass index, or BMI for short, is a measure of body weight based on your height. For decades, BMI has been a way to measure whether someone is at a healthy weight. In general, people are ...

Materials science is an interdisciplinary field concerned with the understanding and application of the properties of matter. Materials scientists study the connections between the underlying ...

The Rasmussen Reports daily Presidential Tracking Poll for Wednesday shows that 49% of Likely U.S. Voters approve of President Trump’s job performance. Forty-eight (48%) disapprove. The latest figures ...