True or False 4. If a set of values are concentrated on the lower values, while
ID: 3178506 • Letter: T
Question
True or False
4. If a set of values are concentrated on the lower values, while there are extreme values (tail) on the right, then it has positive bias.
5. A distribution of values is described as symmetric if the mean mean, median and fashion are the same.
6. A bell-shaped distribution can be described as mesocurtic.
7. The distribution of values is described as having negative bias if the fashion is less than the mean ariasis.
8. If two sets of values have the same average, then there are two identical distributions.
Explanation / Answer
Q.4 if a set of values are concentrated on the lower values, while there are extreme values on the right, it is called a positive bias. Because meadian and mode are on left side of the mean, so it is positively biased.
Q.5 yes, if mean, median and fashion are the same, then the distribution of values can be described as symmetric, because that shows no skewness or biasness.
Q.6 No, Only a medium kurtosis bell- shaped distribution can be described as mesocurtic. mesokurtic distributions are moderately peaked normal bell- shaped distribution.
Q.7 If the fashion or say mode is less than the mean then the distribution has positive bias, not the negative bias
Q.8 No, having same average doesn't decide that two distribution are same. it may be uniform or normal or any other kind of distribution.
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