AveragesHolder. Average Smile. A Maths Starter Of The Day Find the median, mean and range of the Smile test scores: Without a calculator [Drag the faces into order to help find the median.] Answers are available to teachers and parents.Sign In or Create an Account The range is 96 - 8 = 88% The mean is 60.9% Drag the Smiley Faces into order to help you find the median.
Note to teacher: Doing this activity once with a class helps students develop strategies. Here is the URL for a concise version of this page without comments or answers. Transum.org/go/? Here is the URL which will take them to a self marking quiz about averages. Transum.org/go/? And here is a strategy game based on calculation the mean, median and range of three numbers. Transum.org/go/? Finding the Average Laugh. This may seem odd, but bear with me! Students watch the clip, and rate each goat on a scale of 1-5 for how funny it is. Once the clip is finished, they have a set of data. Prompting questions like ‘how funny was it overall’ and leading into averages. This works for a whole range of things. Use your imagination… but preview the videos you choose before playing them to the class! Mean-mode-range Like this: Like Loading... 3.03%20Statistical%20Calculations.pdf. 221. The ‘Average’ wage | Maths Sandpit.
Here’s a problem on averages that has been used by many teachers over the years. I like the additional ‘sting in the tail’ as it really makes pupils think about real life and it is an instant use of calculating the mean from an ungrouped frequency table. Image Credit: www.vivcorecruitment.co.uk The Problem A job advert says that the average worker at OfficesRUs earns over £30 thousand pounds. OfficesRUs Salaries: Director £100,000Manager £50,000Sales Person £35,000Clerical Assistant £22,000Trainees £15,000 Is the advert true? The Discussion If pupils calculate the mean they will find it is £44,400 – this makes the advert true But why would a company have the same number of employees at each pay grade? The Sting OfficesRUs is a clerical agency, offering temporary clerical staff for other businesses. 1 Director £100,0004 Managers £50,0008 Sales People £35,000200 Clerical Assistants £22,0004 Trainees £15,000 Is the advert still true?
The Result This is the working out from my board. Like this: Graph of the Week.