Summary
Contents
The author focuses especially on weaknesses in numeracy often observed in adults, and in teacher-trainees in particular.
Check-up 58: Cumulative Frequency Graphs, Finding the Median and Quartiles
Check-up 58: Cumulative Frequency Graphs, Finding the Median and Quartiles
- From the cumulative frequency graph given in Check-up 57, what were the lower quartile, median and upper quartile for the average points scores of the 160 grammar schools?
- From the cumulative frequency graph given in Further Practice question 57.1, what were the lower quartile, median and upper quartile for the percentages of pupils achieving level 3 for reading in this group of schools? What were the 40th and 60th percentiles?
Answers to Check-up 58
- Median = 61 points, LQ = 58 points, UQ = 65.5 points, approximately.
- Median = 36%, LQ = 26%, UQ = 47%, 40th %ile = 33%, 60th %ile = 40%, approximately.