Census
Census is the collection of data from the entire population and not just a selected bunch of groups. The process of acquiring this number and accumulating the count is the census count which also might occur on a regular basis. For example, it is used while conducting a survey, a comparison between data, etc. Let us learn more about the census, the method of calculating, and solve a few examples.
1.  Census Definition 
2.  Uses of Census 
3.  Census Vs Sampling 
4.  Average Daily Census 
5.  FAQs on Census 
Census Definition
By definition, census is considered as the process of calculating, acquiring, and recording data in a systematic manner about a certain given population. It is mostly used while collecting data on national population, housing censuses, agriculture, business, supplies, etc. This data provided complete information about job details, age factors, socioeconomic details, population size, and educational qualification of the group of the population being surveyed. Census is both used in math and statistics where it helps in collecting information about the population in different contexts such as backgrounds, place of stay, etc.
Uses of Census
Census is useful in different areas or fields, the uses are as follows:
 Census data is represented visually or analytically in a statistical way that helps in comparison or find an association between different areas of population.
 Census data is published in different formats that are compatible with businesses, governments, charities, schools, etc.
 The census data helps in facilitating research, investment, and business decisions both in the public and private sectors.
 The data helps the government to collect funds for the needy, plan educational systems, create new employment opportunities, etc.
Census Vs Sampling
Census is the process of finding and recording data about every member of a population that is mostly connected with national data, smaller populations, etc. For example, to find the number of dog owners, people above the age of 75, etc. Sampling is the opposite of census where it only includes a small percentage of the population. The accuracy in the census is more detailed than in sampling as it deals with only smaller groups. In other words, a census is generally more accurate and ultimately more useful than a sample study. For example, a census counts all of the women in Texas and records their ages. A sample might randomly select 1,000 women in Texas and ask each of them their age. The sample could offer an estimate of how many women in Texas are over 50 while a survey would identify exactly how many women in Texas are over 50. Census is considered to be an expensive method compared to sampling.
Average Daily Census
Average daily census also called ADC refers to the arithmetical average of the number of people who participated in a daily program that is calculated over a calendar year. This is calculated by adding the total number of service days divided by 365 days. Each organization sets a specific time frame that needs to be calculated using the average daily census formula. Hence, the formula is:
Average Daily Census = Total Number of Service Days / Total Number of Days.
☛Related Topics
Listed below are a few topics related to census.
Census Examples

Example 1: In the year 2010, hospitals had 150 beds for adults and children from January through June 30. On July 1 the hospital increased its beds to 200 and the number remained 200 through December 31. During the first six months, 27,813 patients days of service were provided to the hospital's adults and children. During the last 6 months, 35,873 days of service were provided. What is the average daily census of the first six months?
Solution:
While calculating the average daily census, we need to keep in mind both the leap year and nonleap year. Let us calculate for both.
First six months = 27,813 patients.
For a nonleap year:
Average Daily Census = Total Number of Service Days / Total Number of Days
= 27813/181 = 153.67
For a leap year:
Average Daily Census = Total Number of Service Days / Total Number of Days
= 27813/182 = 152.81
Therefore, the average daily census for the first six months is 153.67.

Example 2: Emily has 3 children where the product of their age is 36 and the sum is 16. With one being the oldest and the other two kids being the youngest. What is the age of all the three children?
Solution:
Since we know one child is old and the other two are young and the product of their age is 36. Hence, we find the factors,
36 = 2 × 2 × 3 × 3
Sum of the age = 16.
Therefore, the ages are 12, 3, and 1.
FAQs on Census
What is Sample and Census in Math?
Census is the process of collecting data about everyone or everything in a population. It is also called complete enumeration. Whereas a sample is a subset of the unit in the population that represents data of a selected group of people in the population.
What is Census in Statistics?
In statistics, census is a survey that is conducted on the entire set of observations that is owned by the population. For example, calculating the population, the production of crops, the traffic on a particular road, etc.
What is Census in Simple Terms?
In simple terms, census is the collection of data from the entire population on business, agriculture, etc. This data provided complete information about job details, age factors, socioeconomic details, population size, and educational qualification of the group of the population being surveyed.
What is the Difference Between Census and Sampling?
Census gathers data about every member of the population whereas sampling gathers data only about a part of the population. The census helps in studying the data in a more accurate manner whereas sampling narrows the research to one particular group.
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