Data Analytics Quiz 4

For an odd number of observations, the median is the mean of the two middle numbers.

False

In stock trading, the higher the coefficient of variation for the stock, the smaller the relative risk is for the return provided.

False

The measure of location that specifies the middle value when the data are arranged from least to greatest is called the mode.

False

A correlation of 0 indicates that the two variables have no linear relationship with each other.

True

A population consists of all items of interest for a particular decision or investigation.

True

A sample is a subset of a population.

True

Skewness describes the lack of symmetry of data.

True

The average is formally called the arithmetic mean (or simply the mean) which is the sum of the observations divided by the number of observations.

True

The larger the variance, the more the data are spread out from the mean.

True

The range is the difference between the maximum value and the minimum value in the data set.

True