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The image displays a notebook open to a page with handwritten notes and calculations related to rank-correlation, specifically Spearman's rank correlation. The notes define rank correlation and explain its use as a test for association between two variables when the data is ordinal. A table with columns labeled "x", "y-rank", "d", "d", and "d²" is partially visible, showing numerical data and calculations. Below the table, a formula for calculating 'P' (presumably Spearman's rho) is written: P = 1 - 6∑d² / n(n²-1). The notebook is placed on a wooden surface, likely a desk or table, which appears to be part of an indoor setting. The lighting suggests it's daytime, possibly with ambient light from a window or overhead source. The background shows a hint of a green object and the edge of a wooden structure, which could be part of furniture or shelving. There are no people visible in the image. The primary subjects are the handwritten notes and calculations within the notebook, indicating a study or work session related to statistics or research methodology. The environment appears to be a functional space for academic or analytical tasks. The image does not contain any information or visual cues that would allow for the identification of the city of Jos, Nigeria.
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