English
z = (68-52)/10 = 1.6 SDs above average
Math
z = (68 - 55)/8 = 1.625 SDs above average, better
Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths
were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.
please show working out
3 answers
Thats it Damon
its maths. Because std deviation is how far one is away from the mean.
1 answer