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Pearson's correlation coefficient is the covariance of the two variables divided by the product of their standard deviations. The form of the definition involves a "product moment", that is, the mean (the first moment about the origin) of the product of the mean-adjusted random variables; hence the modifier product-moment in the name.
The perceived value means that people can compare the products and prices online, bringing them the perceived value of getting more benefits online than in an offline store. [28] The comfortable environment that online shopping brings to customers can make consumers get more perceived value.
In contrast, marketing research relates to all research conducted within marketing. Market research is a subset of marketing research. [10] (Avoiding the word consumer, which shows up in both, [73] market research is about distribution, while marketing research encompasses distribution, advertising effectiveness, and salesforce effectiveness). [74]
In the stock market the risk premium is the expected return of a company stock, a group of company stocks, or a portfolio of all stock market company stocks, minus the risk-free rate. [6] The return from equity is the sum of the dividend yield and capital gains and the risk free rate can be a treasury bond yield.
Profit margin is calculated with selling price (or revenue) taken as base times 100. It is the percentage of selling price that is turned into profit, whereas "profit percentage" or "markup" is the percentage of cost price that one gets as profit on top of cost price.
The tonne (/ t ʌ n / ⓘ or / t ɒ n /; symbol: t) is a unit of mass equal to 1,000 kilograms.It is a non-SI unit accepted for use with SI.It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the short ton (United States customary units) and the long ton (British imperial units).
Robert Shiller's plot of the S&P composite real price–earnings ratio and interest rates (1871–2012), from Irrational Exuberance, 2d ed. [1] In the preface to this edition, Shiller warns that "the stock market has not come down to historical levels: the price–earnings ratio as I define it in this book is still, at this writing [2005], in the mid-20s, far higher than the historical average
The MERU, or Milli Earth Rate Unit, is an angular velocity equal to 1/1000 of Earth's rotation rate. It was introduced by MIT's Instrumentation Laboratories (now Draper Labs) to measure the performance of inertial navigation systems. [83] One MERU = 7.292 115 × 10 ^ −8 radians per second [84] or about 0.2625 milliradians/hour.