Neco Model Questions Vol1 2021 Civic Education Question 25
Practice objective / multiple choice question 25 from the 2021 Neco Model Questions Vol1 Civic Education examination.
The Corruption Perception Index (CPI) for a country over five consecutive years is: Year 1 = 45, Year 2 = 48, Year 3 = 50, Year 4 = 53, Year 5 = 57 (scale 0-100, higher = less corruption). The government asserts that the annual increase in CPI follows a quadratic model \(CPI = a t^{2} + b t + c\), where \(t\) is the number of years since Year 1 (\(t=0\) for Year 1). Assuming the model fits exactly the first three years, determine:\n1. The predicted CPI for Year 6 (\(t=5\)).\n2. The average annual percentage decrease in perceived corruption (i.e., the reduction in \(100 - CPI\)) from Year 1 to Year 6 based on the predicted CPI, expressed to two decimal places. Provide both results.
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This is Neco Model Questions Vol1 2021 Civic Education Question 25. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Civic Education examination.
Difficulty level: Hard .
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