What is Statistics?
Statistics is a collection of mathematical techniques that help to analyze and present data.
What is Range?
Range = The maximum value - The minimum value
Comparing Statndard Deviation of two sets of data values
similar frequency usually means high standard deviation
What are the Measures of Central Tendency?
Mean (aka average) = sum of data values x frequency
Sum of all data values = mean × frequency
Median = value in the middle
Mode = the most common data value