Neco 2024 Data Processing Question 37
Practice objective / multiple choice question 37 from the 2024 Neco Data Processing examination.
From a survey of 200 households the following totals were obtained: \(\Sigma x = 560\), \(\Sigma y = 7200\), \(\Sigma x^{2} = 1900\), \(\Sigma y^{2} = 280\,000\), \(\Sigma xy = 22\,500\), where \(x\) is the number of ICT devices and \(y\) is the monthly internet expenditure (₦). (i) Compute the Pearson correlation coefficient \(r\) between \(x\) and \(y\). (ii) State whether the relationship is positive, negative or none. (iii) Determine the least‑squares regression line for predicting \(y\) from \(x\), giving the slope and intercept to two decimal places.
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About This Question
This is Neco 2024 Data Processing Question 37. It is one of the objective questions from the 2024 Neco Data Processing examination.
Difficulty level: Medium .
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