Data Services In Topeka KS At NW Database Services

Data Cleaning, Data Cleansing, Data Scrubbing, Deduplication, Data Transformation, NCOA, Mail PreSorts, Email Verification, Email Append, & Phone Append Services in Topeka Kansas

Get The Best Database Services In Topeka Kansas

We provide data services to businesses and organizations in Topeka KS and all Kansas cities. With over 3 decades of experience in the database business, you won’t find a company that can solve your specific database needs with higher quality service or better prices than Northwest Database Services. No matter what your specific need is, our team will find a data service solution to suit your situation.


More Cities and States Where We Offer Data Cleaning Services

We Are A Full Service Data Services That Can Help You Run Your Business

Northwest Database Services is a full-spectrum data service that has been performing data migration, data scrubbing, data cleaning, and de-duping data services for databases and mailing lists, for over 34 years. NW Database Services provides data services to all businesses, organizations, and agencies in Topeka KS and surrounding communities.

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What We Do

Database Services

When you need your data to speak to you regarding your business’s trends, buying patterns or just whether or not your customers are still living.

Data Transformation

We provide data transformation services for Extract, Transform and Load (ETL) operations typically used in data migration or restoration projects.

De-duplication Service

Duplication of data plagues every database and mailing list. Duplication is inevitable, constantly keeps growing and erodes the quality of your data.

Direct Mail - Presorts

It’s true the United States Postal Service throws away approximately thirty five percent of all bulk mail every year! Why so much? Think: “Mailing list cleanup.

Email-Phone Append

With access to more than 500 million email addresses, Northwest Database Services uses one of the most comprehensive and unique data sets in the industry.


Over 40 million Americans change their address annually, which makes us do the work to maintain a high-quality mailing list while you focus on your business.

We Are Here To Help!

5 + 15 =


Woodland, WA 98674


gch [@]
To use email, remove the brackets


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(360) 841-8168

Information About Data Cleaning And Data Services

Visualizations Can Be Used to Spot Outliers

To be useful, data must be free from any contamination. Data analytics is dependent on accurate data. Data analysis is not possible if the data are corrupt. Visual representations are a great way to display data. To be useful, however, the data must not be corrupt.

Data analysts create data visualizations to present data visually to communicate their findings to relevant stakeholders. These visualizations can show patterns and outliers in large quantities of data by using graphs, charts, and maps. This article will discuss the different types of data visualizations. Data analysts have two options to quickly spot outliers.

Box Plots Can Be Used to Identify Outliers

Visualizing data in a box plot makes it easy to spot outliers. The “box” will be displayed on the box plot. This represents the interquartile range (from the lower to the higher quartiles) and any outliers that are not within the “whiskers”. Each side shows the minimum and maximum data values. If the box has a greater whisker, the prominent outlier is the minimum value. For boxes with a minimum whisker, the most notable outlier would be the maximum value. With a module such as Plotly, you can create box plots in Excel and Python.

Scatter Plots Can Be Used to Identify Outliers

Scatter plots are scatterplots that display data “scattered along an axis” for 2 variables. Scatter plot visualizations will make it easy to see outliers. These are data points that are the furthest away from the regression line, which is the single line that best fits the data. These visualizations can also be made in Python or Excel, similar to box plots. How to spot outliers using statistical methods Data analysts might use statistical methods to assist in machine learning modeling. This could include the identification, understanding, and sometimes elimination of outliers. Two common methods for identifying outliers will be discussed. There are other options that may prove to be more helpful in your analysis.

Dbscan Can Help You Identify Outliers

DBSCAN (Density Based Spatial Clustering of Applications with Noise) is a method that can be used for machine-learning and data analysis. DBSCAN visually represents the relationships among features, trends, populations, and other data within a dataset. It can also be used for detecting outliers. DBSCAN uses non-parametric algorithms to create density-based clustering algorithms. It is focused on finding neighbors that are close together. Outliers are areas that exist in low-density, isolated areas far from their neighbors. Data analysts will recognize DBSCAN as a machine learning specialist and data analyst. This algorithm has been in use since 1996. It won a prestigious ‘test-of time award’ at a major conference in data mining. This makes it a standard in the industry. DBSCAN implementations are available in scikit and R, as well as Python.

Northwest Database Services has 34+ years experience with all types of data services, including mail presorts, NCOA, and data deduplication. If your database systems are not returning poor data, it is definitely time for you to consult with a data services specialist. We have experience with large and small data sets. Often, data requires extensive manipulation to remove corrupt data and restore the database to proper functionality. Call us at (360)841-8168 for a consultation and get the process of data cleaning started as soon as possible.

NW Database Services
404 Insel Rd
Woodland WA 98674

City of Topeka KS Information

Topeka KS

Topeka, the capital of the U.S. state of Kansas, is also the seat of Shawnee County. It lies in northeast Kansas along the Kansas River, in Shawnee County. The city’s population was 126 587 at the 2020 census. In the 2010 census, Topeka’s metropolitan statistical area included Shawnee and Jackson counties as well as Jefferson, Jefferson, Osage and Wabaunsee Counties.


Topeka is a Kansa Osage word meaning “place where we can dig potatoes” or “a good spot to dig potatoes”. Topeka, as a placename was first recorded in 1826. It is the Kansa name of what is now known as the Kansas River. Topeka was chosen by its founders in 1855 as the Kansa name for what is now called the Kansas River. It “was novel, Indian-derived, and euphonious in sound.” Topeka’s name is believed to have been suggested by Joseph James, a mixed-blood Kansa Native American. This city was established in 1854 and was one of the Free-State towns that were founded by Eastern antislavery people immediately after the passing of the Kansas-Nebraska Bill. Topeka was established as a city in 1857.


Forbes named Topeka one of the top U.S. cities for having the highest temperature variations, precipitation and wind in 2007. Topeka is located in USDA zone 6a, which has a humid continental climate with hot and humid summers and cold to very dry winters. The monthly average temperature for a given month is 29.7 degrees F (-1.3 degree Celsius) in January and 79.0 degrees F (26.1 degrees Celsius) July. The maximum temperature is 90 degrees (32 degrees Celsius) on average 41.5 afternoons per calendar year, and 100 degrees (38 degC), on average 3.5 afternoons per calendar year. On average, four mornings per month are below freezing while 21 afternoons remain below freezing. From October 15 to April 17, the average window for freezing temperatures occurs.


The 2010 census showed that the city had 127.473 residents, 53.943 households, 30707 families, and 53.943 households. The average population density was 2,118.5 people per square mile (818.0/km2). Average housing density was 990.2/sq mile (382.3/km2). The city’s racial makeup included 76.2% White, 11.3% African American and 1.4% Native American. It also contained 4.8% from other races and 4.9% from more than one race. 13.4% of the population were Hispanics and Latinos of all races. Non-Hispanic whites accounted for 69.7% in 2010 compared to 86.3% in 1970.


The Topeka Metropolitan Transit Authority offers local transit service. Bus service is available from 6 am to 6:30pm Monday through Friday and 7 am to 5pm Saturday. The agency also offers a demand response general public taxi service that operates on Sundays, from 8 to 11:15 pm.

Top Businesses

Finance, insurance, rental and leasing (7.8%); professional and scientific management and administrative services (7.6%); art, entertainment, recreation and accommodation (7.2%); construction (6.0%); transport and warehousing and utilities (5.8%); wholesale trade (3.2%). Blue Cross and Blue Shield of Kansas, which employs approximately 1,800 people, is the largest insurance company. BNSF Railway, which employs approximately 1,100 people, is the largest transport employer. Evergy has nearly 800 employees. Public administration employs 9.9% of the workforce, or about a tenth.


Topeka KS Map