Mean from a Bar Chart Statistics.

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Presentation transcript:

Mean from a Bar Chart Statistics

(via a frequency table) Mean from a bar chart (via a frequency table) A survey was carried out to find the average number of children per family living in a village. The results are shown in the bar chart. Use this diagram to make up a frequency table and hence work out the average number of children per family. 0 1 2 3 4 5 6

(via a frequency table) The marks obtained by pupils in a class test are shown in the bar chart. Make a frequency table and use it to find the average mark Mean from a bar chart (via a frequency table) 3 4 5 6 7 8 9

(via a frequency table) The rainfall over a period of time was observed and the results are shown in the bar chart. Use the diagram to work out the average rainfall over the time period. Mean from a bar chart (via a frequency table) 0 0.25 0.5 0.75 1.0 1.25

(via a frequency table) Pupils were asked to count the number of hours they spent watching television in a weekend. The results are recorded in the bar chart. Work out the mean number of hours spent watching television. Mean from a bar chart (via a frequency table) 3 4 5 6 7 8 9