Answer 3 multiple choice questions. Need done in 10 minutes

Question Description

1- If for a set of data the coefficient of variation is 0.08 and the mean is 30 and the empirical rule is applicable, then about 68% or roughly 2/3 of the data should fall between

29.2 and 31.6

25.0 and 35.0

27.6 and 32.4

26.8 and 33.2

26.8 and 31.2

2- For a set of 4 observations, the arithmetic mean is 60 while the highest observation is 81 and the lowest is 49. Then the median is _________ and the distribution is _______________.

75; skewed to the left

60; skewed to the right

62.5; skewed to the left

65; symmetrical

55; skewed to the right

3- In a negatively skewed distribution, the

Mean is greater than the median and the median is greater than the mode.

Mean is greater than the median and the median is smaller than the mode.

Mean is smaller than the median and the median is greater than the mode.

Mean is equal to the median and the median is equal to the mode.

Mean is smaller than the median and the median is smaller than the mode.

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