SOLUTION: My first statistical psychology exam was out of 100 points. There are 29 students in the class and the class exam average was 65%. My grade was 57%. I am trying to find out the low
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Question 1039919: My first statistical psychology exam was out of 100 points. There are 29 students in the class and the class exam average was 65%. My grade was 57%. I am trying to find out the lowest exam grade in the class based on the class average. How can I find out? Thanks Found 2 solutions by solver91311, MathTherapy:Answer by solver91311(24713) (Show Source):
It is impossible to tell the range of a set of data if you only know the average. The only thing that you know for certain, given that the average was 65 is that the total of all the scores is 29 times 65, but there is a myriad of ways that 29 scores that individually have a maximum of 100 and a minimum of 0 can add up to 1,885.
Since you know that your score is 57, then you can say with certainty that the lowest score in the class is in the closed interval [0, 57]. That is specific as you can possibly get with the information given.
John
My calculator said it, I believe it, that settles it
You can put this solution on YOUR website!
My first statistical psychology exam was out of 100 points. There are 29 students in the class and the class exam average was 65%. My grade was 57%. I am trying to find out the lowest exam grade in the class based on the class average. How can I find out? Thanks
All you can tell from the given info is that you scored lower than the average, or better yet, your score was "below average." That's not good!
