Statistics and Probability

Exam Prep Study Notes (Things to remember) 

The mean of a set of numbers is the sum of the numbers in the set divided by the number of values in that set
Given a set of numbers, the median is the middle number in that set when the numbers are arranged in an ascending (smallest to the largest) order. For a set with an even number of values, the average of the two middle numbers is taken
is the number that appears most frequently in a given set




Use a bar graph to compare data

Use a line graph to show trends over time

Circle graph is used to show the parts of a whole. The percentages add up to 100%

Use a scatter plot to show trends when the data points are not connected

Impossible event
Probability of an impossible event is 0
Certain event
Probability of a certain event is 1


‹ Ratio and Proportion           up



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