stats

Relatively speaking, which statistics exam did you do better on? On your first statistics exam you scored a 72 and on the second exam you scored an 89. Hey, you’re improving! Or are you? On the first exam, the class mean was 71 with a standard deviation of 15. On the second exam the class mean was 95 with a standard deviation of 5. Convert your scores into z scores and determine whether your grade improved over the course of the semester relative to the other students in the class.

  1. 👍 0
  2. 👎 0
  3. 👁 131
asked by kelly
  1. Z = (score-mean)/SD

    Which Z score is highest?

    1. 👍 0
    2. 👎 0
    posted by PsyDAG
  2. z

    1. 👍 0
    2. 👎 0
    posted by zoe

Respond to this Question

First Name

Your Response

Similar Questions

  1. statistics

    On this semesters final exam, john scored 72 on his calculus exam and 53 on his statistics exam. The z score for both exams was the same. Which on would he do better on? a. calculus b.statistics c. the exam scores are equivalent

    asked by mike on October 11, 2014
  2. statistics

    On this semesters final exam, john scored 72 on his calculus exam and 53 on his statistics exam. The z score for both exams was the same. Which on would he do better on? a. calculus b.statistics c. the exam scores are equivalent

    asked by mike on October 10, 2014
  3. statistics

    5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and

    asked by shirley on November 29, 2011
  4. statistics

    5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and

    asked by neil on June 3, 2011
  5. statistics

    12. A statistics student received a grade of 85 on a statistics midterm. If the corresponding z score equaled +1.50, and the standard deviation equaled 7, what was the average grade on this exam? a. 95.5 b. 74.5 c. 78.0 d. Cannot

    asked by tim on February 26, 2012
  6. statistics

    On this semesters final exam, john scored 72 on his calculus exam, (class distribution (u=65, \?=3.57)\) ) and 53 on his statistics exam (class distribution :u=49, ?=2.04. Which exam should he get the better grade.

    asked by Sally on October 8, 2014
  7. Statistics

    On this semesters final exam, john scored 72 on his calculus exam, (class distribution (u=65, \σ=3.57)\) ) and 53 on his statistics exam (class distribution :u=49, σ=2.04. Which exam should he get the better grade.

    asked by Sally on October 7, 2014
  8. statistics

    Correction On this semesters final exam, john scored 72 on his calculus exam, (class distribution (u=65, \?=3.57)\) ) and 53 on his statistics exam (class distribution :u=49, ?=2.04. Which exam should he get the better grade.

    asked by Sally on October 8, 2014
  9. statistics

    The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam. Calculate the correlation coefficient r.

    asked by milly on September 28, 2011
  10. Statistics

    In Professor Smith's statistics course, the correlation between students' total scores before the final exam and their final exam scores is r = 0.67. The pre-exam totals for all students in the course have a mean of 275 and a

    asked by Jannel on February 1, 2009

More Similar Questions