What is the meaning of quantitative observation?


Quantitative observation is any kind of observation that can be expressed numerically as a measured value. A few simple examples of quantitative observations are temperature, time and mass, but any observation that can be expressed as a specific number is quantitative. Quantitative observations are useful because they can easily be compared to one another. With enough of these observations, scientists can make useful predictions about the world.

Quantitative observation is key to scientific research in fields ranging from physics to sociology, although researchers in the physical sciences most commonly employ it. Quantitative data are useful in part because they can be analyzed statistically. This analysis can, among other things, help determine the significance of research. Scientists can use a statistical tool called a chi-squared test to determine the probability that the results they have obtained are a result of random chance. For example, if a scientist rolls a die 20 times and, after reviewing the results, feels that it might be loaded, he can use a chi-squared test to determine the probability that those results can be derived randomly from a fair die.

Quantitative observation can also help scientists make predictions about the world. For example, in chemistry, scientists can time a reaction at varying reactant concentrations to determine how those concentrations affect the overall reaction rate. With enough quantitative observation, they can effectively predict the rates of reaction in untested concentrations.

Q&A Related to "What is the meaning of quantitative observation..."
1. Quantitative observations are observations observed of data in numbers: a
A quantitative observation is an observtion that can be measured in numbers, such as volume, length, acceleration, number of widgets produced per hour etc.
Essentially, the process of quantitative easing involves a central bank, such as the Federal Reserve, buying bonds-debt securities issued by the government and companies-and other
It means taking measurements of whatever is being observed.
1 Additional Answer
Ask.com Answer for: what is the meaning of quantitative observation
What Is the Meaning of Quantitative Observation?
The word quantitative means "of, relating to, or expressible in terms of quantity," according to Merriam-Webster's Dictionary. "Quantitative observation" is defined by the University of South Alabama as "standardized observation." Simply put,... More »
Difficulty: Easy
Source: www.ehow.com
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2015 Ask.com