Question

question 2
dr. vila has found that students who score higher than 90% on the midterm tend to earn scores of 75% or better on the final exam, while students who score less than 60% on the first midterm often end up with a failing grade on the final exam. this suggests that
a. the scores on the first midterm and the final exam are positively correlated.
b. the scores on the first midterm and the final exam are negatively correlated.
c. students who do poorly on the first midterm give up and study less for the final exam.
d. dr. vila should change the final exam so it is fairer to students who are not doing well in the course.

Explanation:

Se observa que las calificaciones altas en el primer parcial se asocian a calificaciones buenas en el examen final, mientras que las calificaciones bajas en el parcial se asocian a calificaciones reprobatorias en el final. Esto describe una correlación positiva, ya que a medida que aumenta la calificación del parcial, aumenta la del examen final, y a medida que disminuye la del parcial, disminuye la del final. Las otras opciones no se sustentan con la información dada: no hay evidencia de correlación negativa, de que los estudiantes se rindan o de que se deba cambiar el examen final.

Answer:

A. the scores on the first midterm and the final exam are positively correlated.