Averages from Grouped Frequency Tables

Sample Averages from Grouped Frequency Tables questions

A few of the 39 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

1. Question 11 markGrade 5-6
   Amol owns a sandwich shop. The shop is open 6 days a week (not 7 - it is closed on Sundays). Over a 4-week period, Amol sold 2400 sandwiches. He wants to work out the mean number of sandwiches sold per day the shop was open. His method is: $2400 \div 28 = 85.7$ Make one criticism of Amol's method.
   Show the worked solution

   4 weeks $= 28$ days in total, but the shop is closed one day per week (Sunday), so it was only open for $28 - 4 = 24$

What are the common mistakes in Averages from Grouped Frequency Tables?

When a pupil makes one of these on Revision Workshop, the marking engine names the mistake and explains it, instead of just marking the answer wrong.

• Uses a class interval's upper bound instead of its midpoint when estimating the mean

  Used each class's upper bound instead of its midpoint

• Picks the class with the highest values rather than the one with the highest frequency as the modal class

  Picked the class with the highest values instead of the class with the highest frequency

• Uses the midpoint of the wrong class interval when estimating the mean

  Paired each frequency with the midpoint of the following class instead of its own class

Quick answers about Averages from Grouped Frequency Tables

How many Averages from Grouped Frequency Tables practice questions are there?

There are 39 self-marking GCSE and IGCSE Maths questions on Averages from Grouped Frequency Tables, written for AQA, Pearson, OCR, Pearson International GCSE Maths A (4MA1) across Foundation and Higher tier. Each one is marked instantly and has a full worked solution.

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No. You can start practising Averages from Grouped Frequency Tables straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.