<p>Please tell me the answer and an explanation</p>
<p>1)Which of the following is a good measure of variability if a data set contains extreme values that may be the result of incorrect measurement?
(a)range (b)variance (c)standard deviation (d)interquartile range (e)mean</p>
<p>2)Which of the following measure spread?
I.Variance
II.Interquartile Range
III.Standard Deviation
(a)I only (b)II only (c)III only (d)I and III only (e)I,II,and III</p>
<p>3)A data set consisting of five members has a mean of 1012 and a standard deviation of 4.The number 6 is added to the data set.
(a)the standard deviation will increase and the variance will increase.(b)the standard deviation will increase but the change in variance is unknown(c)The standard deviation will increase but the variance will decrease(d) The standard deviation will decrease but the variance will increase(e)The standard deviation will decrease and the variance will decrease.</p>
<p>4)One of the richest families in the world has just moved into the neighborhood.Previously,everyone in your neighborhood had relatively moderate and similar incomes.Which of the following is still a good way to measure your neighborhood’s income?
(a)Range (b) Mean (c) Variance (d)Median (e)Standard Deviation</p>
<p>5)In which of the following distributions would the median be greater than the mean?
(a)a distribution that is skewed to the left (b) a normal distribution (c) a symmetric distribution (d)a uniform distribution (e) a distribution that is skewed to the right</p>