Statistics > EXAMs > StraighterlineMAT 150q1 (All)

StraighterlineMAT 150q1

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Question 1 Correct 5.00 points out of 5.00 Flag question Question text Which measure of dispersion disregards the algebraic signs (plus and minus) of each difference between X and the mean? Sel ... ect one: a. Standard deviation b. Mean deviation c. Arithmetic mean d. Variance Feedback The correct answer is: Mean deviation Question 2 Correct 5.00 points out of 5.00 0 qaid=21034839&q 0 3 Flag question Question text For a symmetrical distribution, the variance is equal to the standard deviation. Select one: True False Feedback The correct answer is 'False'. Question 3 Correct5.00 points out of 5.00 Flag question Question text 0 qaid=21034845&q 0 3 0 qaid=21034846&q 0 3 According to the Empirical Rule, 75% percent of the observations lie within plus and minus 2.00 average mean deviations. Select one: True False Feedback The correct answer is 'False'. Question 4 Incorrect 0.00 points out of 5.00 [Show More]

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