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The local genealogical society in Coles County, Illinois, has compiled records on all 55,914 gravestones in cemeteries in the county for the years 1825 to 1985. Historians plan to use these records to learn about African Americans in Coles County鈥檚 history. They first choose an SRS of 395 records to check their accuracy by visiting the actual gravestones.13 (a) Explain how you would use technology or Table D to choose the SRS. Your description should be clear enough for a classmate to obtain your results. (b) Use your method from (a) to choose the first 3 gravestones.

Short Answer

Expert verified
Use a random number generator to select 3 numbers from 1 to 55,914; these correspond to the first three gravestones.

Step by step solution

01

Define the Population and Sample Size

Identify the total population and the sample size needed for the Simple Random Sample (SRS). There are 55,914 gravestone records from which we need to select a sample. The sample size is 395 records.
02

Assign Numbers to Records

Assign a unique number to each of the 55,914 records. This means each gravestone record should be labeled with a number from 00001 to 55914.
03

Choose Random Numbers Using Technology

To select the sample, we can use a random number generator (like in Excel, Python, or an online tool) to choose numbers within the range 1 to 55,914. Set the random number generator to provide 395 unique numbers to correspond to the gravestone records.
04

Select the First 3 Gravestones

Use the random number generator to select the first three numbers. These numbers correspond to the gravestone records and are your first selections in the sample.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Genealogical Research
Genealogical research involves studying families, their lineages, and histories. It is a popular field for historians and enthusiasts wanting to trace ancestry and discover ancestral stories. This research can involve a multitude of records, ranging from birth, marriage, and death certificates, to historical documents like census records and gravestone information.
In the context of Coles County's gravestone records, genealogical research plays an essential role by providing data on individuals over many generations. This helps historians understand the past demographics, cultures, and social structures. Moreover, it offers a glimpse into the lives of African Americans in the area's history, contributing significantly to cultural heritage studies.
  • Genealogy can uncover family connections that were previously unknown.
  • Involves detailed analysis of historical records like gravestones, which can tell stories of past lives.
By using a systematic approach to study gravestones, researchers can glean crucial information not only about individual families but also broader socio-cultural patterns.
Random Number Generation
Random number generation is a critical process in selecting a Simple Random Sample (SRS). It ensures that every item in a population has an equal chance of being included in the sample. Various tools, from simple calculators to sophisticated software, can perform this task efficiently.
To conduct the exercise involving gravestones in Coles County, historians might use a random number generator to choose gravestone records objectively. This can be done using:
  • Excel 鈥 A common tool where the 'RANDBETWEEN' function can generate desired random numbers.
  • Python 鈥 Utilize libraries such as 'random' that can automate number generation processes.
  • Online tools 鈥 Various websites offer random number generation services at the click of a button.
These methods help eliminate bias, ensuring the sample's reliability and validity. They empower researchers to perform analysis with confidence, knowing that their sample fairly represents the population.
Sample Selection Process
The sample selection process is pivotal in research studies that require data analysis, such as the analysis of gravestones for genealogical research. The Simple Random Sample (SRS) method guarantees each record's equal chance of selection, which is ideal for obtaining unbiased results.
To select a sample, the first step is to clearly define the population鈥攊n this case, all 55,914 gravestones. Then, each record is assigned a unique number. Once all records are numbered, a random number generator selects 395 unique numbers, each corresponding to a gravestone.
  • Assign unique numbers to each item or record.
  • Use a random number generator to select the required sample size.
This systematic approach helps researchers verify the accuracy of historical records by visiting corresponding gravestones. It also provides a manageable subset of data for in-depth analysis.
Historical Records Analysis
Historical records analysis involves scrutinizing various types of documentation to extract meaningful information about past events and populations. In the Coles County gravestone study, this analysis helps historians gather insights into past community dynamics and demographics.
By examining gravestones, researchers can identify patterns such as common family names, ages at death, and historical demographic shifts. This analysis often involves:
  • Cross-referencing gravestone information with other historical documents.
  • Looking for trends and patterns that shed light on cultural or social changes.
Through such methods, historians can better understand the historical context of African Americans in the region and contribute essential knowledge to the discourse of their heritage and contributions. This type of research is invaluable in painting a broader picture of historical progressions and surroundings through meticulous record examination.

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