Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

This article presents the shape of the price change frequency distribution for the S&P 500 over approximately six decades on a daily basis, monthly basis and calendar year basis. The degree of ...

Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician (CMT). Vikki Velasquez is a researcher and writer who has managed, coordinated, and ...

The statistical distributions of the counts of organisms are generally skewed, and hence not normally distributed, nor are variances constant across treatments. We present a likelihood-ratio testing ...

A knowledge of basic business statistics can help small business owners make and assess their decisions with greater accuracy. Frequency value is a basic business statistics term used to describe a ...

The authors propose a formal mathematical measure to assess the versatility (simplicity and adaptability) of parametric frequency and severity distributions before use. They compute and compare the ...