Ask Question
17 September, 22:21

Assume you obtaind the following exam scores from six students: 97,90,86,93,76, and 86

a. Find the mean for the scores. I got 88 for the mean.

b. Demonstrate that Σ (Χ - X bar) = 0 for these scores.

c. Find the value of Σ (Χ - X bar) ² for these scores.

+5
Answers (2)
  1. 17 September, 22:25
    0
    A) The answer is 88

    B) I don't know how to do it

    3) I don't know

    Sorry I tried
  2. 17 September, 22:40
    0
    A) 88 is correct

    B) I think we are looking for variance which would be 43.6666 - other wise I don't really understand what they are asking for.

    C) I think this is sum of differences which would be 262.

    I don't know if this is what they are asking for however. so I'm not 100% sure if this is correct, sorry.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Assume you obtaind the following exam scores from six students: 97,90,86,93,76, and 86 a. Find the mean for the scores. I got 88 for the ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers