Sarah counted the number of vehicles which passed her school over the course of one hour. She did this every day for a week and got these results: 180, 164, 212, 197, 207, 222, 146.What is the mean of the given data?

Four things are associated with data handling: the range, the mean, the mode and the median. These four ideas are used to work out averages.

The range of a set of data is the difference between its highest and lowest values. The mean is worked out by adding all the values together, then dividing by the number of values. The mode is the value which appears most often. Finally, the median is the middle value of the data, if it is arranged from lowest to highest.

 

Related: 11 Plus (11+) Maths Practice Test: Handling Data (Difficult)