### magnitude | size | circumference:

Scrotal circumference
* is an important and useful measurement in determining breeding ability
  - directly related to a bull's fertility and reproductive performance
  - of medium to high heritability
  - the best estimate of a bull's testes volume and daily sperm production
* varies with the breed and age of a bull.

Waist circumference
* can gauge a person's overall pattern of weight gain.
* is another measurement that calculates into the obesity factor
  - associated with abdominal fat
* measures abdominal fat.

Class size
* has a lot to do with how a child learns.
* refers to the actual number of students in a classroom with a teacher
  - number of students in a teacher s class

Clutch size
* appears to be an innate genetically driven characteristic.
* can also vary with the age of the hen.
* is affected by egg parasitism.
* is correlated to female carapace length
  - with carapace length and growth rates
* varies within a species due to a number of intrinsic and extrinsic factors.
* vary within and between species.

Database size
* has minimal effect on retrieval times.
* is the main constraint on an in-memory database.

Effect size
* is simply the ratio of an existing difference in terms of standard deviation units.
* standard measure that can be calculated from any number of statistical outputs.

Egg size
* can vary greatly and the largest egg is the ostrich egg.
* decreases as the breeding season goes on because of the high energy cost on the females.
* increases with the size of the mother.
* is dependent on breed, age, and weight of the hen.
* seems to be associated with female size in an allometric fashion.
* varies according to location, and with water temperature.

Family size
* Refers to the number of people in a family.
* begins to decrease as the total fertility rate drops.
* can also affect income distribution
  - be any combination of family members
* is an important factor, which leads to how much care is given to individual children
  - larger in remote regions and less-developed areas than in urban and developed areas
* refers to the number of family members of the survey respondent.
* varies from a single parent with one child to a family of six.

### magnitude | size:

File size
* increases with the increasing number of colors.
* is also proportional to the square of the image size
  - how large the file is as expressed in bytes of data
  - important when publishing graphics on the net
  - proportional to the pixel dimensions of the image
  - related to the number of drawing elements and the complexity of the drawing
  - the sum of size of mail files and that of files on home directory
  - very important to the speed with which images load on a website
* refers to the amount of space a photo takes up in digital memory.

Firm size
* has a major effect on workers' health coverage.
* is measured by the number of partners.
* plays a significant role in medical insurance
  - an important role in benefit programs

Foot size
* changes with age.
* increases with standing as well as with the time of day.

Genome size
* is the total amount of DNA contained within one copy of a single genome.
* seems related to the type of interspersion
  - to be correlated with total intron length per gene