Statistics

Review

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





Examples