# Statistics and Probability

## Exam Prep Study Notes (Things to remember)

 Mean 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 Median 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 Mode is the number that appears most frequently in a given set ..... .......

### Tips

 Graphs 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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