Skip to content

Course home

Sign up

Representations of Data

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115
Question 86

In a study of how much time students spend on social media, usage of a random sample of 15 students was examined for a particular day.

The total time of usage, x x\,x minutes, for the 15 students was

6, 25, 39, 62, 65, 74, 80, 94, 125, 127, 154, k, 184, 210, 251 6,\ 25,\ 39,\ 62,\ 65,\ 74,\ 80,\ 94,\ 125,\ 127,\ 154,\ k,\ 184,\ 210,\ 251 6, 25, 39, 62, 65, 74, 80, 94, 125, 127, 154, k, 184, 210, 251

where 154<k<184154<k<184154<k<184.

a.

Find the median and quartiles for these data, giving your answers in terms of kkk.

[3]
b.

Show that there are no outliers.

[2]
c.

For k=170k=170k=170, draw a box plot for these data.

A grid for drawing a box plot. The grid is 10 units wide and 4 units high, with each unit divided into 10 smaller squares, totaling 100 squares.

[3]
Markscheme

Representations of Data Questions

  1. A Level
  2. /Maths
  3. /Representations of Data

160 exam-style questions on Edexcel A Level Maths Representations of Data, covering 3.1 Outliers, 3.2 Box Plots, 3.3 Cumulative Frequency, 3.4 Histograms, and 3.5 Comparing Data. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank