A) a measure of central tendency B) the difference between median and mode. C) t

Question

A) a measure of central tendency B) the difference between median and mode. C) the difference between mean and median D) the difference between 3d (upper) quartile and 1" (lower) quartile. 8. Coefficient of variation is used A) to measure the absolute variability/dispersion in a data set B) to compare the relative variability dispersion between data sets. Q) to measure the symmetry in a data set D) for none of the above. 9. In a factory, the mean, median, and mode ncome level of the employees are same. It means A) there is no variation in the income distribution. B) the income distribution is positively skewed. C) the income distribution is negatively skewed. D) the income distribution is symmetric. 10. Osha has a candy factory and she sells candies in small packs. But, not all packets are of the same weights. She says the standard deviation of the packets is 25 grams. Hence, the variance of the candy packets A) is 5 grams. B) is 225 grams C) is 625 grams. D) is 25 grams

Explanation / Answer

Question 8:

Coefficient of measure is not used to compare datasets. It is used as a measure of dispersion of a data set in a standardized way Therefore a is the correct answer here.

Question 9:

As the mean, median and the mode income levels of the employees is the same here, this means that the income is like a symmetric distribution about the center ( like a normal bell curve distribution ) Note that it could still have a non zero standard deviation and variability but it has to be symmetric.

Therefore d is the correct answer here.

Question 10:

The variance is the square of standard deviation. Here we are given the standard deviation as 25. Therefore Variance is computed as: = 252 = 625 grams2

Therefore c is the correct answer here.

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