Statistical analysis has two main focuses: descriptive statistics and infernetial statistics.
Descriptive statistics summarise data using graphs and summary values such as the mean and interquartile range. Descriptive statistics can help us identify relationships and patterns. Descriptive statistics do not draw conclusions beyond the data we already have. Inferential statistics anaylsis does allow us to make conclusions beyond the data we have.
A defintion of inference is: The process of drawing conclusions.
First, replace all variables with the given values. 12(9) + 9(2) + 2(12) This should then equal 150, then the formula says to multiply this answer by 2. Doing so, should give a final answer of 300.
