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Current time:0:00Total duration:1:30

AP.STATS:

UNC‑1 (EU)

, UNC‑1.E (LO)

, UNC‑1.E.1 (EK)

so we have this bar chart here this is the scores on midterm and final exams so this axis of vertical axis is the scores and then it's by student and the blue bar is the midterm and the yellow bar is the final and the question they asked us is by how many points did Nadia's score improve from the midterm to the final exam so let's look at Nadia so this is who are talking about Nadia and we care about how many points did she improve from the midterm to the final midterm is blue final is yellow so on the midterm it looks like she scored and if I were to eyeball it looks like seventy-five points and then on the final it looks like she scored eighty looks like she scored 85 points so it looks like her score improved by 10 points though 10 points let's try one more how many students improve their scores from the midterm to the final exam so to improve from the midterm to the final that means that the yellow bar for a given student which is the final is going to be higher than the midterm bar that's available we can improve from the midterm to the final so Brandon improved from the midterm to the final vanessa improved from the midterm to the final daniel improved from the midterm to the final kevin improved from the midterm to the final william got a lower score on the final in the midterm so he did not improve so the number of students that improve their scores from midterm to final are 1 2 3 4 students so for students

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