Generate a detailed methodology for detecting anomalies in time series sales data, including statistical methods and visualization techniques.
Task: generate a summary of a video. Input: [video title], [video transcript], [length of summary: e.g., 100 words, 200 words] Instruction: summarize the video transcript, focusing on the main topics and key takeaways. The summary should be concise and informative, providing a clear overview of the video's content. Adhere to the specified length constraint.
Generate a conceptual design for a facial recognition system, considering ethical implications, data privacy, and technical components.
Develop a detailed time series forecasting model using ARIMA, including data preparation steps, model selection criteria, and evaluation metrics.
Detect and analyze unusual spikes or deviations in cloud spending to pinpoint potential issues and optimize expenditure.