23. Averages Talk About


Puzzler


If Tony has an average score of 78% for the 4 maths tests he has completed so far, what is the lowest possible score he could have achieved on 1 test?


How many hours do you sleep at night? People sleep on average 8 hours a night. Does this mean that everyone sleeps for 8 hours? So what do you think average means?


If you described somebody as being above average or below average height, what would that mean?


See if you can fi nd out what the average height is for men and women in Ireland. Is it different in other countries?


Estimating and Calculating Averages


How would you fi nd the average weight of 5 children who were measured as follows?


41kg, 46kg, 36kg, 38kg, 44kg 41 + 46 + 36 + 38 + 44 = 205kg


5 205 41kg = average weight


Strand: Data


Curriculum Objectives: Explore and calculate averages of simple data sets.


168


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