A researcher investigated the relationship between daily screen time (in hours) and sleep quality scores (on a scale of 1 to 50) using a sample of 18 participants. A Spearman's rank correlation was conducted. The calculated value of rs r_s\,rs was -0.524. The critical value for a two-tailed test where p≤0.05 p \le 0.05\,p≤0.05 and N=18N = 18N=18 is 0.475. Write a significance statement for the correlation analysis performed on this data.
513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.