# Project Maths Solutions books on Sale at the Ploughing

John Brennan will be sighing copies of his solutions books at the ploughing on Wednesday 20th September

# Junior Cert 2013 – 2017 Maths results

We have analysed the Junior Cert Maths results 2013-2017 .The table below show the percentages getting A,ABC,D and fail . We have also plotted a scatter plot and calculated the correlation coefficient  of numbers sitting the exam versus % A grade .You would think that as the numbers sitting the exam increases  the % A rate would decrease but no! The % A rate actually increases. There are a number of ways of explaining this.(I)Standards have fallen ! (ii)The % rate getting A is being  manipulated !

 Year A A,B,C D E,F,NG Number 2017 14.1 74.2 21.5 4.5 34822 2016 11.7 76.3 20.2 3.5 32830 2015 11.3 74.7 21.1 4.2 32535 2014 10.7 73.00 22.5 4.5 32041 2013 12.0 78.4 18.4 3.3 30500

# Error in 2017 leaving Cert H Maths Q9 Paper 1 may have cost you points!( eventhough you got 10/20 marks for drawing an axis)

In question 9 Leaving Cert Higher Maths Paper 2017. Students were asked to insert scaled axes on a given diagram .The marking scheme gives 10 marks (out of 20) for drawing a vertical or horizontal axis (unscaled) or 18 marks for  fully scaled vertical or horizontal axis. So why are the marks so generous?. Reason the question cannot be done ! The information in the question is conflicting and incorrect.

We are given f(t) = a+bCosct and told that f(2)=5.5 and f(14.56) = 5.5, but using information  in the question we get f(0) =5.5 ,f(2) = f(14.56) = 4.6 .It is therefore impossible to label and scale the axes .Any student who attempted the question should receive full marks (20).

# 4th/5th Year Classes Starting September 11th in Applied Maths, Maths H ,French H in Dundrum

4th/5th Year Classes Starting September 11th in Applied Maths, Maths H ,French H in Dundrum All 90 minute classes  call 012960006