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Analysing and Interpreting Data
Member rating: No Rating | Words: | Submitted: Mon Sep 12 2005
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Analysing and Interpreting Data Measures of Central Tendency This means average and there are three types of average. Mode - the most common or most frequent value. If there are two modes we say that the distribution is bimodal, if there are more than 2 modes then it is multimodal. It is easy to find the mode from a frequency distribution as it is the one with the highest frequency, and in a bar chart it is the highest bar. If the information is given in a list then you need to count to find the one that occurs most often. Examples: 1. Find the mode of 11,12,12,12,13,13,13,13,13,14,14,14,15,15. We can see that 13 occurs most often so the mode is 13. 2. The marks obtained in a test taken by 30 children are shown in this table: Mark Frequency 1 3 2 7 3 12 4 6 5 2 What is the modal mark? The largest frequency is 12, so the modal mark is 3. (Do not confuse the frequency with the...
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