A college professor reports that students who finish exams early tend to get better grades than students who hold on to exams until the last possible moment. The correlation between exam score and amount of time spent on the exam is an example of a ____.​Group of answer choices​correlation near zero​positive correlation​negative correlation​correlation near one

Scores on an exam go down as the time spent studying goes down. This is an example ofMultiple choice question.a negative correlation.a positive correlation.the absence of a systematic relationship.no correlation.

Researchers discover the more assignments college students have due in one week, the higher the stress levels of the college students. This shows what type of correlation between these two variables? Group of answer choicesA negative correlation A positive correlation No correlation at all All of the above

Covariance and Correlation are measures of:Group of answer choicesCorrelationDirectionAssociationDispersion

A researcher wants to examine the relationship between the number of hours students spend studying and their exam scores. Which correlation coefficient is appropriate for this scenario?  A. Pearson's correlation coefficient  B. Spearman’s rank correlation coefficient  C. Point-biserial correlation coefficient  D. Phi coefficient

Let's say we find a significant positive correlation between attendance and grade in class. Our intuitive reaction is to think that attendance causes (good) grades in class, but we know better: correlation does not imply causation. If the reason we see the correlation is because students who have to work a lot of hours will miss class AND ALSO will not have as much time to study (and therefore have lower grades), this is an example of __.Group of answer choicestemporal precedencethe third variable problemthe directionality problembad internal validity