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You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

What is a key disadvantage of the F-test when compared to multiple t-tests?

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

In an A/B test, how can you check if assignment to the various buckets was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

Random Bucketing

Suppose there exists a new airline named Jetco that flies domestically across North America. Jetco recently had a study commissioned that tested the boarding time of every airline, and it came out that Jetco had the fastest average boarding times of any airline.

What factors could have biased this result, and what would you look into?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

Boarding Times Bias

A new airline came out as the fastest average boarding times compared to other airlines.  What factors could have biased this result and what would you look into?

Pima County Salaries by Position

<div>OPEN UNTIL FILLEDSalary Grade: 13</div><div>Pay Range Hiring Range: $57,607 - $69,128 Annually Full Range: $57,607 - $80,649 Annually </div>Salary offers are based on the candidate's equivalent experience and internal equity with other employees within the same job classification.Pima County's Department of Transportation is looking for a skilled, motivated professional to join their Mobility, Innovation & Technology (MIT) Division in the Analytics section. This team is responsible for implementing and managing the technology and application needs of the department from a functional & analytical perspective. The MIT division supports the department in diverse ways such as reporting through web applications, process automation, system integrations & data maintenance for improved accuracy. The ideal candidate will demonstrate the ability to prioritize tasks and meet deadlines while emphasizing accuracy and attention to detail. We are looking for a self-motivated, enthusiastic, dependable, innovative contributor with a positive attitude to join our team.This is an in-office position at located 201 N Stone, Tucson, AZ, and cannot be remote.The first review of applications will be on 11/22/2024.As defined under the Americans with Disabilities Act, this classification may include any of the following tasks, knowledge, skills, and other characteristics. This list is ILLUSTRATIVE ONLY and is not a comprehensive listing of all functions and tasks performed by incumbents of this class. Work assignments may vary depending on the department’s need and will be communicated to the applicant or incumbent by the supervisor.<ul><li>Acts as the subject matter expert on reporting tools and data analysis; makes recommendations on process changes;</li><li>Provides data analysis and reporting solutions support for various departments;</li><li>Works on data analysis tasks within one or more functional areas independently or as part of a team;</li><li>Collaborates with internal and external stakeholders to gather and validate requirements;</li><li>Develops and writes business requirements for identified data analysis and reporting solutions;</li><li>Creates and maintains a variety of reports, data queries, scripts, workflows, and automated tasks using structured query language and various database management tools;</li><li>Identifies and analyzes commonly used queries and reports to determine if currently available solutions are applicable;</li><li>Researches reporting problems and assists in the creation of models to help analyze reporting needs;</li><li>Develops, executes, and documents user test plans;</li><li>Coordinates and performs quality control testing of new or updated software and processes; helps resolve issues based on test results;</li><li>Verifies that collected data meets required quality standards;</li><li>May maintain the quality of metadata repository/data dictionary by adding, modifying, and deleting data;</li><li>Creates data quality tickets and ensures they are resolved in a timely manner;</li><li>Assists in the development and presentation of end-user training materials;</li><li>May train and assist clients in the use of business intelligence solutions.</li></ul>Bachelor's degree from an accredited college, university, or technical trade school with a major in computer science, computer engineering, management information systems (MIS), or a closely related field as determined by the department head at the time of recruitment.(Relevant experience and/or education from an accredited college, university, or technical trade school may be substituted.)Qualifying education and experience must be clearly documented in the "Education" and "Work Experience" sections of the application. Do not substitute a resume for your application or write "see resume" on your application.Preferred Qualifications:<ol><li>Minimum one (1) year experience understanding & analyzing business processes to make recommendations to maximize and prioritize efficiencies.</li><li>Minimum two (2) years of experience with customer service in a functional capacity to bridge communication gaps across diverse groups. For example, between business units or across diverse teams.</li><li>Experience supporting ERP systems or Asset Management applications, preferably in a Transportation or Public Works setting.</li><li>Experience working with large data sets, data mining, data analysis, or reconciling multiple systems.</li><li>Experience using Python, SQL, or other industry-standard programming languages in support of creative problem-solving to inform decision-making.</li><li>UAS Remote Pilot Certificate and experience flying in support of business needs.</li></ol>Selection Procedure:Pima County Human Resources Department reserves the right to admit to the selection process only those candidates that meet the minimum/desired qualifications. All applications will be assessed based on an evaluation of the listed education and experience. Candidates meeting the minimum/desired qualifications may be further evaluated/scored against any advertised Preferred Qualifications. The hiring authority will interview and select the successful candidate from a referral list provided by Human Resources. Additional assessments/testing may be required as part of the selection process.Licenses and Certificates: Valid driver license is required at time of application. Valid AZ driver license is required at time of appointment. The successful applicant will be subject to a 39-month DOT Motor Vehicle Record review to determine applicant’s suitability to operate county vehicles in accordance with Pima County administrative procedures. Failure to obtain and maintain the required licenses and certifications shall be grounds for termination. Any offer of employment resulting from this recruitment is contingent upon Fleet Services’ review and approval of the candidate’s driving record.Special Notice Item: The County requires pre-employment background checks. Successful candidates will receive a post-offer, pre-employment background screening to include verification of work history, education, and criminal conviction history. A prior criminal conviction will not automatically disqualify a candidate from employment with the County.Physical/Sensory Requirements: Physical and sensory abilities will be determined by position.Working Conditions: Working conditions will be determined by position.EEO Information: Pima County Government is an Equal Employment Opportunity employer. We are committed to an inclusive and diverse workforce and will not discriminate in employment opportunities or practices on the basis of race, color, religion, national origin, age, disability, gender, sexual orientation, kinship, political interest, or any other characteristic protected by law.
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Pima County Interview Questions

Pima County Interview Guides

Pima County Interview Questions

Pima County Salaries by Position

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