Suppose the correlation between study hours and exam scores for OSU students is +.50. What proportion / percent of the variability in exam scores can be explained by the relationship with study hours?
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The correlation coefficient between study hours and exam scores is +.50. Show more…
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Statistic class wants to review the relationship between the number of hours studied and grades received on the test. Below is the information on a sample of 4 students and the amount of time they spent studying and their grade. Student Hours spent studying Grade Patrick 2 70 Otto 1 60 Ryan 3 70 April 4 90 What is the coefficient of correlation r=
David N.
In a certain study, it was found that the correlation coefficient (r) between the hours of study per week and the final exam scores of 15 students was 0.85. Interpret the correlation coefficient value in the context of the study. Assuming the correlation is significant, if a student increased their study hours per week, what can you predict about their final exam score? If the study is repeated with the same methodology and the same sample size, but with another random sample of students, what is the probability that we would find no significant correlation between hours studied and exam scores?
Kyle L.
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