IAI Actuarial Core Principles · Actuarial Statistics · Purpose and function of data analysis
In the data analysis process followed in actuarial work, which of the following best describes the purpose of the first stage, before any data is collected or modelled?
The first stage is defining the objectives of the analysis and the questions to be answered. This guides which data to collect and which methods to use. Modelling, validation and reporting all come later, once the purpose of the exercise is clear.
- AFitting the most complex model available to the data
- BDefining the objectives of the analysis and the questions to be answeredCorrect
- CPresenting final results to the client
- DValidating the model against out-of-sample data
- Selecting the significance level for every test
Explanation
The data analysis process starts by defining the aim of the analysis, which guides what data are needed and which methods are suitable. Modelling, validation and presentation come later, and the significance level is chosen only when a test is designed.
Did you get it right without looking?
One question tells you little. A timed set on Purpose and function of data analysis shows your real accuracy, how long you take and where you lose marks.
More Purpose and function of data analysis questions
- Which of the following is a reason why the results of a data analysis should be reproducible, as emphasised in the data analysis process?
- An insurer has 2,000 motor policy records. During the cleaning step, 80 records have a missing vehicle age. The analyst finds that missingne…
- An actuary fits a simple linear regression of claim cost (Rs thousand) on driver age using past data: fitted line = 40 − 0.5 × age. She uses…
- A health insurer tracks 1,000 policyholders every month for 24 months, recording each person's monthly claim cost. Which description fits th…
- A health insurer fits a regression of claim cost (₹ thousand) on age: cost = 4.0 + 0.5 × age, using policyholders aged 25 to 60. It uses the…
- A pension scheme dataset has 500 members, and salary is missing for 100 of them. Among the 400 members with salary recorded, the mean salary…