Statistics: true of false

So far, you've seen multiple ways of describing a variable or a distribution. Before you dive into some Tableau exercises, let's make sure you understand the following concepts.

Statistic	Description
Count	number of observations
Median	midpoint of your observations
Average	mean value of your observations
Min/Max	lowest and highest value
Quartile/IQR	25th and 75th percentile / spread of the 50% of your middlemost observations
Modality/Mode	number of modes / most occurring value
Skewness	(a)symmetry of the distribution
Kurtosis	distribution of extreme values
Variance	squared deviation from the mean
Standard Deviation	square root of the variance, same unit as variable
Population	collection of all items of interest
Sample	part of the population, the actual available data