Mathematics, 26.08.2019 05:50, shemiahking5432

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.

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