Question
Which approach is most effective in leveraging data for
fraud detection in financial transactions?Solution
In fraud detection, historical transaction data is vital for identifying anomalies that suggest fraudulent behavior. Data analysts employ machine learning algorithms and statistical models to detect unusual patterns in transaction data, such as atypical spending or high-frequency transactions. Techniques like supervised learning (for known fraud cases) and unsupervised learning (for anomaly detection) enhance fraud prevention by adapting to evolving fraud tactics, making this approach crucial for risk management in finance. Option A is incorrect as random sampling is insufficient for effective fraud detection. Option C is incorrect because demographic data alone doesn’t highlight transaction irregularities. Option D is incorrect as static models fail to capture dynamic fraud patterns. Option E is incorrect since machine learning enhances fraud detection capabilities significantly.
A developer is tasked with implementing a task scheduling system where multiple tasks with dependencies need to be executed. Which data structure would ...
Which of the following data visualization tools is specifically designed for creating interactive dashboards for business analytics?
In data cleaning, which technique is most effective in handling outliers in a dataset that could skew analysis?
Which of the following is an example of non-random sampling?
Which forecasting method is most appropriate for time series data with a consistent trend but no seasonality?
What is polymorphism in Python?
Which sampling technique is most appropriate when the population is naturally divided into groups that differ significantly from each other?
In Python, which method removes missing values?
What will be the output of the following Python code?
def modify_list(lst):
  for i in range(len(lst)):
    lst[i] = ls...
A scatter plot reveals a strong positive linear relationship between two variables. Which of the following is the most appropriate statistical measure t...