CAIE S1 2012 November — Question 4

Exam BoardCAIE
ModuleS1 (Statistics 1)
Year2012
SessionNovember
TopicMeasures of Location and Spread
TypeCalculate statistics from grouped frequency table
4 In a survey, the percentage of meat in a certain type of take-away meal was found. The results, to the nearest integer, for 193 take-away meals are summarised in the table.
Percentage of meat\(1 - 5\)\(6 - 10\)\(11 - 20\)\(21 - 30\)\(31 - 50\)
Frequency5967381811
  1. Calculate estimates of the mean and standard deviation of the percentage of meat in these take-away meals.
  2. Draw, on graph paper, a histogram to illustrate the information in the table.
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