### ratio | proportion | percent:

Percent change
* is based on difference in relative humidity.
* is the percent change from the previous quarter at annual rate of growth
  - previous year
  - same quarter one year ago
* refers to simple percent changes.

### ratio | proportion | percent:

Unemployment rate
* Unemployment Rate Represents the proportion of the civilian labor force that is unemployed.
* Unemployment Rate is expressed as a percentage
  - the number of unemployed as a percentage of the labor force
* are at historically low levels
  - disproportionately high in the Aboriginal community
  - higher for younger than older members of the labor force
* are highest among youth and are higher for females than for males
  - in small rural communities
  - particularly high among nonmetro minorities and teenagers
  - percentages
  - the highest in the world
* can fluctuate significantly from month to month.
* is the number unemployed expressed as a percentage of the labour force
  - ratio of unemployed people to the labour force
* remain very low, and labor markets show continuing symptoms of tightness.
* represents the percent of the civilian labor force who are unemployed.
* show substantial decreases in all sectors.
* vary in minority communities
  - within and across regions

### ratio | proportion:

Percentage
* Divide the number of sensitive organisms by the total number of organisms collected.
* Use numerals to express percentages.
  * is far below consensus. Please try again later.
* are proportion
  - the number of students that are at state standards
* is proportion
* is the percentage of the total entries made
  - hours spent
* living ground cover values represent the percentage area per plot covered by ryegrass.
* refer to percents of school totals
  - proportion of Indigenous population in Australia as a whole
  - total number of stocks by category
* refers to cumulative percentage.
* refers to the number of people who responded the same way to each question
  - percentage of respondents to whom the particular information applies
* represent proportions between samples and harvests.
* represent the degree of homology among amino acid sequences
  - portion of the total parasitic energy consumed

Quotient
* also come up in certain tests, like the IQ test, which stands for intelligence quotient.
  * also come up in certain tests, like the IQ test, which stands for intelligence quotient. In this case, your quotient is basically your score. In recent decades, as people begin to emphasize full personal development, other similar quotients appeared.

Refractive index
* Some refractive indexes have distinct values
* are ratios.
* function of wavelength, so blue light brought to focus nearer than red light.
* measure of the degree to which a medium bends light.
* numerical value indicating the light bending power of a medium such as glass.
* varies with position for inhomogeneous materials.

Safety factor
* are one of the largest variables in estimating fatigue life
* function of design stress and yield strength.

Stoichiometry
* All stoichiometry essentially is based on the evaluation of the number of moles of substance.
* deals with the mass and volume relationships of chemical changes.
* define the mole as related to Avogadro s hypothesis.
* is the calculation of quantities in a chemical equation.
* only depends on the reaction chemistry and inert gases or liquids present.
* word from chemistry class.