NCEA Level 3 Statistics (Mastery) (2026 Edition) | Fun Learn
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✨ Magical Challenges ✨
Can you solve these mystery puzzles?
You are analysing monthly ice cream sales over five years. The data is recorded every month, but due to a data entry error, three consecutive months are missing. Why is this a critical problem for time series analysis?
You are forecasting next December's sales for a retail store. Your time series plot shows a clear upward trend with strong seasonal peaks every December. Which component is most directly responsible for the December spike?
A sports scientist wants to investigate whether the number of hours spent training per week (variable A) predicts a player's average points per game (variable B). Which statement correctly identifies the roles of the variables?
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